21499264

素因数分解:

$2^7\times {\mathrm{101}}^1\times {\mathrm{1663}}^1$

素因数の和:1778

約数の個数: 32

約数和(自身を含む): 43280640

約数和(自身を除く): 21781376

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 404, 808, 1616, 1663, 3232, 3326, 6464, 6652, 12928, 13304, 26608, 53216, 106432, 167963, 212864, 335926, 671852, 1343704, 2687408, 5374816, 10749632, 21499264]

約数ペア:

[(1, 21499264), (2, 10749632), (4, 5374816), (8, 2687408), (16, 1343704), (32, 671852), (64, 335926), (101, 212864), (128, 167963), (202, 106432), (404, 53216), (808, 26608), (1616, 13304), (1663, 12928), (3232, 6652), (3326, 6464)]