99871640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^3$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 249225120

約数和(自身を除く): 149353480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 3721, 5368, 6710, 7442, 13420, 14884, 18605, 26840, 29768, 37210, 40931, 74420, 81862, 148840, 163724, 204655, 226981, 327448, 409310, 453962, 818620, 907924, 1134905, 1637240, 1815848, 2269810, 2496791, 4539620, 4993582, 9079240, 9987164, 12483955, 19974328, 24967910, 49935820, 99871640]

約数ペア:

[(1, 99871640), (2, 49935820), (4, 24967910), (5, 19974328), (8, 12483955), (10, 9987164), (11, 9079240), (20, 4993582), (22, 4539620), (40, 2496791), (44, 2269810), (55, 1815848), (61, 1637240), (88, 1134905), (110, 907924), (122, 818620), (220, 453962), (244, 409310), (305, 327448), (440, 226981), (488, 204655), (610, 163724), (671, 148840), (1220, 81862), (1342, 74420), (2440, 40931), (2684, 37210), (3355, 29768), (3721, 26840), (5368, 18605), (6710, 14884), (7442, 13420)]