81889854080

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{4451}}^1$

素因数の和:4595

約数の個数: 256

約数和(自身を含む): 220694544000

約数和(自身を除く): 138804689920

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 64, 68, 76, 80, 85, 89, 95, 128, 136, 152, 160, 170, 178, 190, 272, 304, 320, 323, 340, 356, 380, 445, 544, 608, 640, 646, 680, 712, 760, 890, 1088, 1216, 1292, 1360, 1424, 1513, 1520, 1615, 1691, 1780, 2176, 2432, 2584, 2720, 2848, 3026, 3040, 3230, 3382, 3560, 4451, 5168, 5440, 5696, 6052, 6080, 6460, 6764, 7120, 7565, 8455, 8902, 10336, 10880, 11392, 12104, 12160, 12920, 13528, 14240, 15130, 16910, 17804, 20672, 22255, 24208, 25840, 27056, 28480, 28747, 30260, 33820, 35608, 41344, 44510, 48416, 51680, 54112, 56960, 57494, 60520, 67640, 71216, 75667, 84569, 89020, 96832, 103360, 108224, 114988, 121040, 135280, 142432, 143735, 151334, 169138, 178040, 193664, 206720, 216448, 229976, 242080, 270560, 284864, 287470, 302668, 338276, 356080, 378335, 396139, 422845, 459952, 484160, 541120, 569728, 574940, 605336, 676552, 712160, 756670, 792278, 845690, 919904, 968320, 1082240, 1149880, 1210672, 1353104, 1424320, 1437673, 1513340, 1584556, 1691380, 1839808, 1980695, 2299760, 2421344, 2706208, 2848640, 2875346, 3026680, 3169112, 3382760, 3679616, 3961390, 4599520, 4842688, 5412416, 5750692, 6053360, 6338224, 6734363, 6765520, 7188365, 7526641, 7922780, 9199040, 9685376, 10824832, 11501384, 12106720, 12676448, 13468726, 13531040, 14376730, 15053282, 15845560, 18398080, 23002768, 24213440, 25352896, 26937452, 27062080, 28753460, 30106564, 31691120, 33671815, 37633205, 46005536, 48426880, 50705792, 53874904, 54124160, 57506920, 60213128, 63382240, 67343630, 75266410, 92011072, 107749808, 115013840, 120426256, 126764480, 127952897, 134687260, 150532820, 184022144, 215499616, 230027680, 240852512, 253528960, 255905794, 269374520, 301065640, 430999232, 460055360, 481705024, 511811588, 538749040, 602131280, 639764485, 861998464, 920110720, 963410048, 1023623176, 1077498080, 1204262560, 1279528970, 2047246352, 2154996160, 2408525120, 2559057940, 4094492704, 4309992320, 4817050240, 5118115880, 8188985408, 10236231760, 16377970816, 20472463520, 40944927040, 81889854080]

約数ペア:

[(1, 81889854080), (2, 40944927040), (4, 20472463520), (5, 16377970816), (8, 10236231760), (10, 8188985408), (16, 5118115880), (17, 4817050240), (19, 4309992320), (20, 4094492704), (32, 2559057940), (34, 2408525120), (38, 2154996160), (40, 2047246352), (64, 1279528970), (68, 1204262560), (76, 1077498080), (80, 1023623176), (85, 963410048), (89, 920110720), (95, 861998464), (128, 639764485), (136, 602131280), (152, 538749040), (160, 511811588), (170, 481705024), (178, 460055360), (190, 430999232), (272, 301065640), (304, 269374520), (320, 255905794), (323, 253528960), (340, 240852512), (356, 230027680), (380, 215499616), (445, 184022144), (544, 150532820), (608, 134687260), (640, 127952897), (646, 126764480), (680, 120426256), (712, 115013840), (760, 107749808), (890, 92011072), (1088, 75266410), (1216, 67343630), (1292, 63382240), (1360, 60213128), (1424, 57506920), (1513, 54124160), (1520, 53874904), (1615, 50705792), (1691, 48426880), (1780, 46005536), (2176, 37633205), (2432, 33671815), (2584, 31691120), (2720, 30106564), (2848, 28753460), (3026, 27062080), (3040, 26937452), (3230, 25352896), (3382, 24213440), (3560, 23002768), (4451, 18398080), (5168, 15845560), (5440, 15053282), (5696, 14376730), (6052, 13531040), (6080, 13468726), (6460, 12676448), (6764, 12106720), (7120, 11501384), (7565, 10824832), (8455, 9685376), (8902, 9199040), (10336, 7922780), (10880, 7526641), (11392, 7188365), (12104, 6765520), (12160, 6734363), (12920, 6338224), (13528, 6053360), (14240, 5750692), (15130, 5412416), (16910, 4842688), (17804, 4599520), (20672, 3961390), (22255, 3679616), (24208, 3382760), (25840, 3169112), (27056, 3026680), (28480, 2875346), (28747, 2848640), (30260, 2706208), (33820, 2421344), (35608, 2299760), (41344, 1980695), (44510, 1839808), (48416, 1691380), (51680, 1584556), (54112, 1513340), (56960, 1437673), (57494, 1424320), (60520, 1353104), (67640, 1210672), (71216, 1149880), (75667, 1082240), (84569, 968320), (89020, 919904), (96832, 845690), (103360, 792278), (108224, 756670), (114988, 712160), (121040, 676552), (135280, 605336), (142432, 574940), (143735, 569728), (151334, 541120), (169138, 484160), (178040, 459952), (193664, 422845), (206720, 396139), (216448, 378335), (229976, 356080), (242080, 338276), (270560, 302668), (284864, 287470)]