20662900

素因数分解:

$2^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{1627}}^1$

素因数の和:1768

約数の個数: 36

約数和(自身を含む): 45219328

約数和(自身を除く): 24556428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 127, 254, 508, 635, 1270, 1627, 2540, 3175, 3254, 6350, 6508, 8135, 12700, 16270, 32540, 40675, 81350, 162700, 206629, 413258, 826516, 1033145, 2066290, 4132580, 5165725, 10331450, 20662900]

約数ペア:

[(1, 20662900), (2, 10331450), (4, 5165725), (5, 4132580), (10, 2066290), (20, 1033145), (25, 826516), (50, 413258), (100, 206629), (127, 162700), (254, 81350), (508, 40675), (635, 32540), (1270, 16270), (1627, 12700), (2540, 8135), (3175, 6508), (3254, 6350)]