1278820

素因数分解:

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

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 2749824

約数和(自身を除く): 1471004

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1487, 2974, 5948, 7435, 14870, 29740, 63941, 127882, 255764, 319705, 639410, 1278820]

約数ペア:

[(1, 1278820), (2, 639410), (4, 319705), (5, 255764), (10, 127882), (20, 63941), (43, 29740), (86, 14870), (172, 7435), (215, 5948), (430, 2974), (860, 1487)]