81964480

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 224

約数和(自身を含む): 238109760

約数和(自身を除く): 156145280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 19, 20, 26, 32, 34, 38, 40, 52, 61, 64, 65, 68, 76, 80, 85, 95, 104, 122, 130, 136, 152, 160, 170, 190, 208, 221, 244, 247, 260, 272, 304, 305, 320, 323, 340, 380, 416, 442, 488, 494, 520, 544, 608, 610, 646, 680, 760, 793, 832, 884, 976, 988, 1037, 1040, 1088, 1105, 1159, 1216, 1220, 1235, 1292, 1360, 1520, 1586, 1615, 1768, 1952, 1976, 2074, 2080, 2210, 2318, 2440, 2470, 2584, 2720, 3040, 3172, 3230, 3536, 3904, 3952, 3965, 4148, 4160, 4199, 4420, 4636, 4880, 4940, 5168, 5185, 5440, 5795, 6080, 6344, 6460, 7072, 7904, 7930, 8296, 8398, 8840, 9272, 9760, 9880, 10336, 10370, 11590, 12688, 12920, 13481, 14144, 15067, 15808, 15860, 16592, 16796, 17680, 18544, 19520, 19703, 19760, 20672, 20740, 20995, 23180, 25376, 25840, 26962, 30134, 31720, 33184, 33592, 35360, 37088, 39406, 39520, 41480, 41990, 46360, 50752, 51680, 53924, 60268, 63440, 66368, 67184, 67405, 70720, 74176, 75335, 78812, 79040, 82960, 83980, 92720, 98515, 103360, 107848, 120536, 126880, 134368, 134810, 150670, 157624, 165920, 167960, 185440, 197030, 215696, 241072, 253760, 256139, 268736, 269620, 301340, 315248, 331840, 335920, 370880, 394060, 431392, 482144, 512278, 539240, 602680, 630496, 671840, 788120, 862784, 964288, 1024556, 1078480, 1205360, 1260992, 1280695, 1343680, 1576240, 2049112, 2156960, 2410720, 2561390, 3152480, 4098224, 4313920, 4821440, 5122780, 6304960, 8196448, 10245560, 16392896, 20491120, 40982240, 81964480]

約数ペア:

[(1, 81964480), (2, 40982240), (4, 20491120), (5, 16392896), (8, 10245560), (10, 8196448), (13, 6304960), (16, 5122780), (17, 4821440), (19, 4313920), (20, 4098224), (26, 3152480), (32, 2561390), (34, 2410720), (38, 2156960), (40, 2049112), (52, 1576240), (61, 1343680), (64, 1280695), (65, 1260992), (68, 1205360), (76, 1078480), (80, 1024556), (85, 964288), (95, 862784), (104, 788120), (122, 671840), (130, 630496), (136, 602680), (152, 539240), (160, 512278), (170, 482144), (190, 431392), (208, 394060), (221, 370880), (244, 335920), (247, 331840), (260, 315248), (272, 301340), (304, 269620), (305, 268736), (320, 256139), (323, 253760), (340, 241072), (380, 215696), (416, 197030), (442, 185440), (488, 167960), (494, 165920), (520, 157624), (544, 150670), (608, 134810), (610, 134368), (646, 126880), (680, 120536), (760, 107848), (793, 103360), (832, 98515), (884, 92720), (976, 83980), (988, 82960), (1037, 79040), (1040, 78812), (1088, 75335), (1105, 74176), (1159, 70720), (1216, 67405), (1220, 67184), (1235, 66368), (1292, 63440), (1360, 60268), (1520, 53924), (1586, 51680), (1615, 50752), (1768, 46360), (1952, 41990), (1976, 41480), (2074, 39520), (2080, 39406), (2210, 37088), (2318, 35360), (2440, 33592), (2470, 33184), (2584, 31720), (2720, 30134), (3040, 26962), (3172, 25840), (3230, 25376), (3536, 23180), (3904, 20995), (3952, 20740), (3965, 20672), (4148, 19760), (4160, 19703), (4199, 19520), (4420, 18544), (4636, 17680), (4880, 16796), (4940, 16592), (5168, 15860), (5185, 15808), (5440, 15067), (5795, 14144), (6080, 13481), (6344, 12920), (6460, 12688), (7072, 11590), (7904, 10370), (7930, 10336), (8296, 9880), (8398, 9760), (8840, 9272)]