19742840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37967}}^1$

素因数の和:37991

約数の個数: 32

約数和(自身を含む): 47839680

約数和(自身を除く): 28096840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37967, 75934, 151868, 189835, 303736, 379670, 493571, 759340, 987142, 1518680, 1974284, 2467855, 3948568, 4935710, 9871420, 19742840]

約数ペア:

[(1, 19742840), (2, 9871420), (4, 4935710), (5, 3948568), (8, 2467855), (10, 1974284), (13, 1518680), (20, 987142), (26, 759340), (40, 493571), (52, 379670), (65, 303736), (104, 189835), (130, 151868), (260, 75934), (520, 37967)]