18310220

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2039}}^1$

素因数の和:2497

約数の個数: 24

約数和(自身を含む): 38556000

約数和(自身を除く): 20245780

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2039, 2245, 4078, 4490, 8156, 8980, 10195, 20390, 40780, 915511, 1831022, 3662044, 4577555, 9155110, 18310220]

約数ペア:

[(1, 18310220), (2, 9155110), (4, 4577555), (5, 3662044), (10, 1831022), (20, 915511), (449, 40780), (898, 20390), (1796, 10195), (2039, 8980), (2245, 8156), (4078, 4490)]