20457700

素因数分解:

$2^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{1373}}^1$

素因数の和:1536

約数の個数: 36

約数和(自身を含む): 44723700

約数和(自身を除く): 24266000

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 149, 298, 596, 745, 1373, 1490, 2746, 2980, 3725, 5492, 6865, 7450, 13730, 14900, 27460, 34325, 68650, 137300, 204577, 409154, 818308, 1022885, 2045770, 4091540, 5114425, 10228850, 20457700]

約数ペア:

[(1, 20457700), (2, 10228850), (4, 5114425), (5, 4091540), (10, 2045770), (20, 1022885), (25, 818308), (50, 409154), (100, 204577), (149, 137300), (298, 68650), (596, 34325), (745, 27460), (1373, 14900), (1490, 13730), (2746, 7450), (2980, 6865), (3725, 5492)]