21658004

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{3221}}^1$

素因数の和:3307

約数の個数: 18

約数和(自身を含む): 38860542

約数和(自身を除く): 17202538

約数列:

[1, 2, 4, 41, 82, 164, 1681, 3221, 3362, 6442, 6724, 12884, 132061, 264122, 528244, 5414501, 10829002, 21658004]

約数ペア:

[(1, 21658004), (2, 10829002), (4, 5414501), (41, 528244), (82, 264122), (164, 132061), (1681, 12884), (3221, 6724), (3362, 6442)]