81537960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^4\times {\mathrm{283}}^1$

素因数の和:325

約数の個数: 160

約数和(自身を含む): 286374240

約数和(自身を除く): 204836280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 283, 294, 343, 392, 420, 490, 566, 588, 686, 735, 840, 849, 980, 1029, 1132, 1176, 1372, 1415, 1470, 1698, 1715, 1960, 1981, 2058, 2264, 2401, 2744, 2830, 2940, 3396, 3430, 3962, 4116, 4245, 4802, 5145, 5660, 5880, 5943, 6792, 6860, 7203, 7924, 8232, 8490, 9604, 9905, 10290, 11320, 11886, 12005, 13720, 13867, 14406, 15848, 16980, 19208, 19810, 20580, 23772, 24010, 27734, 28812, 29715, 33960, 36015, 39620, 41160, 41601, 47544, 48020, 55468, 57624, 59430, 69335, 72030, 79240, 83202, 96040, 97069, 110936, 118860, 138670, 144060, 166404, 194138, 208005, 237720, 277340, 288120, 291207, 332808, 388276, 416010, 485345, 554680, 582414, 679483, 776552, 832020, 970690, 1164828, 1358966, 1456035, 1664040, 1941380, 2038449, 2329656, 2717932, 2912070, 3397415, 3882760, 4076898, 5435864, 5824140, 6794830, 8153796, 10192245, 11648280, 13589660, 16307592, 20384490, 27179320, 40768980, 81537960]

約数ペア:

[(1, 81537960), (2, 40768980), (3, 27179320), (4, 20384490), (5, 16307592), (6, 13589660), (7, 11648280), (8, 10192245), (10, 8153796), (12, 6794830), (14, 5824140), (15, 5435864), (20, 4076898), (21, 3882760), (24, 3397415), (28, 2912070), (30, 2717932), (35, 2329656), (40, 2038449), (42, 1941380), (49, 1664040), (56, 1456035), (60, 1358966), (70, 1164828), (84, 970690), (98, 832020), (105, 776552), (120, 679483), (140, 582414), (147, 554680), (168, 485345), (196, 416010), (210, 388276), (245, 332808), (280, 291207), (283, 288120), (294, 277340), (343, 237720), (392, 208005), (420, 194138), (490, 166404), (566, 144060), (588, 138670), (686, 118860), (735, 110936), (840, 97069), (849, 96040), (980, 83202), (1029, 79240), (1132, 72030), (1176, 69335), (1372, 59430), (1415, 57624), (1470, 55468), (1698, 48020), (1715, 47544), (1960, 41601), (1981, 41160), (2058, 39620), (2264, 36015), (2401, 33960), (2744, 29715), (2830, 28812), (2940, 27734), (3396, 24010), (3430, 23772), (3962, 20580), (4116, 19810), (4245, 19208), (4802, 16980), (5145, 15848), (5660, 14406), (5880, 13867), (5943, 13720), (6792, 12005), (6860, 11886), (7203, 11320), (7924, 10290), (8232, 9905), (8490, 9604)]