1621640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 3706560

約数和(自身を除く): 2084920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 571, 710, 1142, 1420, 2284, 2840, 2855, 4568, 5710, 11420, 22840, 40541, 81082, 162164, 202705, 324328, 405410, 810820, 1621640]

約数ペア:

[(1, 1621640), (2, 810820), (4, 405410), (5, 324328), (8, 202705), (10, 162164), (20, 81082), (40, 40541), (71, 22840), (142, 11420), (284, 5710), (355, 4568), (568, 2855), (571, 2840), (710, 2284), (1142, 1420)]