18957804560

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^2\times {\mathrm{29917}}^1$

素因数の和:30108

約数の個数: 60

約数和(自身を含む): 44579196228

約数和(自身を除く): 25621391668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 7921, 15842, 29917, 31684, 39605, 59834, 63368, 79210, 119668, 126736, 149585, 158420, 239336, 299170, 316840, 478672, 598340, 633680, 1196680, 2393360, 2662613, 5325226, 10650452, 13313065, 21300904, 26626130, 42601808, 53252260, 106504520, 213009040, 236972557, 473945114, 947890228, 1184862785, 1895780456, 2369725570, 3791560912, 4739451140, 9478902280, 18957804560]

約数ペア:

[(1, 18957804560), (2, 9478902280), (4, 4739451140), (5, 3791560912), (8, 2369725570), (10, 1895780456), (16, 1184862785), (20, 947890228), (40, 473945114), (80, 236972557), (89, 213009040), (178, 106504520), (356, 53252260), (445, 42601808), (712, 26626130), (890, 21300904), (1424, 13313065), (1780, 10650452), (3560, 5325226), (7120, 2662613), (7921, 2393360), (15842, 1196680), (29917, 633680), (31684, 598340), (39605, 478672), (59834, 316840), (63368, 299170), (79210, 239336), (119668, 158420), (126736, 149585)]