28057640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{683}}^1$

素因数の和:786

約数の個数: 64

約数和(自身を含む): 68947200

約数和(自身を除く): 40889560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 683, 790, 1027, 1366, 1580, 2054, 2732, 3160, 3415, 4108, 5135, 5464, 6830, 8216, 8879, 10270, 13660, 17758, 20540, 27320, 35516, 41080, 44395, 53957, 71032, 88790, 107914, 177580, 215828, 269785, 355160, 431656, 539570, 701441, 1079140, 1402882, 2158280, 2805764, 3507205, 5611528, 7014410, 14028820, 28057640]

約数ペア:

[(1, 28057640), (2, 14028820), (4, 7014410), (5, 5611528), (8, 3507205), (10, 2805764), (13, 2158280), (20, 1402882), (26, 1079140), (40, 701441), (52, 539570), (65, 431656), (79, 355160), (104, 269785), (130, 215828), (158, 177580), (260, 107914), (316, 88790), (395, 71032), (520, 53957), (632, 44395), (683, 41080), (790, 35516), (1027, 27320), (1366, 20540), (1580, 17758), (2054, 13660), (2732, 10270), (3160, 8879), (3415, 8216), (4108, 6830), (5135, 5464)]