682840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 1576080

約数和(自身を除く): 893240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 397, 430, 794, 860, 1588, 1720, 1985, 3176, 3970, 7940, 15880, 17071, 34142, 68284, 85355, 136568, 170710, 341420, 682840]

約数ペア:

[(1, 682840), (2, 341420), (4, 170710), (5, 136568), (8, 85355), (10, 68284), (20, 34142), (40, 17071), (43, 15880), (86, 7940), (172, 3970), (215, 3176), (344, 1985), (397, 1720), (430, 1588), (794, 860)]