20446900

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1471}}^1$

素因数の和:1624

約数の個数: 36

約数和(自身を含む): 44719360

約数和(自身を除く): 24272460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1390, 1471, 2780, 2942, 3475, 5884, 6950, 7355, 13900, 14710, 29420, 36775, 73550, 147100, 204469, 408938, 817876, 1022345, 2044690, 4089380, 5111725, 10223450, 20446900]

約数ペア:

[(1, 20446900), (2, 10223450), (4, 5111725), (5, 4089380), (10, 2044690), (20, 1022345), (25, 817876), (50, 408938), (100, 204469), (139, 147100), (278, 73550), (556, 36775), (695, 29420), (1390, 14710), (1471, 13900), (2780, 7355), (2942, 6950), (3475, 5884)]