81551040

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:319

約数の個数: 224

約数和(自身を含む): 289681920

約数和(自身を除く): 208130880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 19, 20, 24, 30, 32, 34, 38, 40, 48, 51, 57, 60, 64, 68, 76, 80, 85, 95, 96, 102, 114, 120, 136, 152, 160, 170, 190, 192, 204, 228, 240, 255, 263, 272, 285, 304, 320, 323, 340, 380, 408, 456, 480, 510, 526, 544, 570, 608, 646, 680, 760, 789, 816, 912, 960, 969, 1020, 1052, 1088, 1140, 1216, 1292, 1315, 1360, 1520, 1578, 1615, 1632, 1824, 1938, 2040, 2104, 2280, 2584, 2630, 2720, 3040, 3156, 3230, 3264, 3648, 3876, 3945, 4080, 4208, 4471, 4560, 4845, 4997, 5168, 5260, 5440, 6080, 6312, 6460, 7752, 7890, 8160, 8416, 8942, 9120, 9690, 9994, 10336, 10520, 12624, 12920, 13413, 14991, 15504, 15780, 16320, 16832, 17884, 18240, 19380, 19988, 20672, 21040, 22355, 24985, 25248, 25840, 26826, 29982, 31008, 31560, 35768, 38760, 39976, 42080, 44710, 49970, 50496, 51680, 53652, 59964, 62016, 63120, 67065, 71536, 74955, 77520, 79952, 84160, 84949, 89420, 99940, 103360, 107304, 119928, 126240, 134130, 143072, 149910, 155040, 159904, 169898, 178840, 199880, 214608, 239856, 252480, 254847, 268260, 286144, 299820, 310080, 319808, 339796, 357680, 399760, 424745, 429216, 479712, 509694, 536520, 599640, 679592, 715360, 799520, 849490, 858432, 959424, 1019388, 1073040, 1199280, 1274235, 1359184, 1430720, 1599040, 1698980, 2038776, 2146080, 2398560, 2548470, 2718368, 3397960, 4077552, 4292160, 4797120, 5096940, 5436736, 6795920, 8155104, 10193880, 13591840, 16310208, 20387760, 27183680, 40775520, 81551040]

約数ペア:

[(1, 81551040), (2, 40775520), (3, 27183680), (4, 20387760), (5, 16310208), (6, 13591840), (8, 10193880), (10, 8155104), (12, 6795920), (15, 5436736), (16, 5096940), (17, 4797120), (19, 4292160), (20, 4077552), (24, 3397960), (30, 2718368), (32, 2548470), (34, 2398560), (38, 2146080), (40, 2038776), (48, 1698980), (51, 1599040), (57, 1430720), (60, 1359184), (64, 1274235), (68, 1199280), (76, 1073040), (80, 1019388), (85, 959424), (95, 858432), (96, 849490), (102, 799520), (114, 715360), (120, 679592), (136, 599640), (152, 536520), (160, 509694), (170, 479712), (190, 429216), (192, 424745), (204, 399760), (228, 357680), (240, 339796), (255, 319808), (263, 310080), (272, 299820), (285, 286144), (304, 268260), (320, 254847), (323, 252480), (340, 239856), (380, 214608), (408, 199880), (456, 178840), (480, 169898), (510, 159904), (526, 155040), (544, 149910), (570, 143072), (608, 134130), (646, 126240), (680, 119928), (760, 107304), (789, 103360), (816, 99940), (912, 89420), (960, 84949), (969, 84160), (1020, 79952), (1052, 77520), (1088, 74955), (1140, 71536), (1216, 67065), (1292, 63120), (1315, 62016), (1360, 59964), (1520, 53652), (1578, 51680), (1615, 50496), (1632, 49970), (1824, 44710), (1938, 42080), (2040, 39976), (2104, 38760), (2280, 35768), (2584, 31560), (2630, 31008), (2720, 29982), (3040, 26826), (3156, 25840), (3230, 25248), (3264, 24985), (3648, 22355), (3876, 21040), (3945, 20672), (4080, 19988), (4208, 19380), (4471, 18240), (4560, 17884), (4845, 16832), (4997, 16320), (5168, 15780), (5260, 15504), (5440, 14991), (6080, 13413), (6312, 12920), (6460, 12624), (7752, 10520), (7890, 10336), (8160, 9994), (8416, 9690), (8942, 9120)]