2557640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1487}}^1$

素因数の和:1541

約数の個数: 32

約数和(自身を含む): 5892480

約数和(自身を除く): 3334840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1487, 1720, 2974, 5948, 7435, 11896, 14870, 29740, 59480, 63941, 127882, 255764, 319705, 511528, 639410, 1278820, 2557640]

約数ペア:

[(1, 2557640), (2, 1278820), (4, 639410), (5, 511528), (8, 319705), (10, 255764), (20, 127882), (40, 63941), (43, 59480), (86, 29740), (172, 14870), (215, 11896), (344, 7435), (430, 5948), (860, 2974), (1487, 1720)]