209702840

素因数分解:

$2^3\times 5^1\times {\mathrm{5242571}}^1$

素因数の和:5242582

約数の個数: 16

約数和(自身を含む): 471831480

約数和(自身を除く): 262128640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5242571, 10485142, 20970284, 26212855, 41940568, 52425710, 104851420, 209702840]

約数ペア:

[(1, 209702840), (2, 104851420), (4, 52425710), (5, 41940568), (8, 26212855), (10, 20970284), (20, 10485142), (40, 5242571)]