810820

素因数分解:

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

素因数の和:651

約数の個数: 24

約数和(自身を含む): 1729728

約数和(自身を除く): 918908

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 571, 710, 1142, 1420, 2284, 2855, 5710, 11420, 40541, 81082, 162164, 202705, 405410, 810820]

約数ペア:

[(1, 810820), (2, 405410), (4, 202705), (5, 162164), (10, 81082), (20, 40541), (71, 11420), (142, 5710), (284, 2855), (355, 2284), (571, 1420), (710, 1142)]