71745980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{32911}}^1$

素因数の和:33029

約数の個数: 24

約数和(自身を含む): 152053440

約数和(自身を除く): 80307460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 32911, 65822, 131644, 164555, 329110, 658220, 3587299, 7174598, 14349196, 17936495, 35872990, 71745980]

約数ペア:

[(1, 71745980), (2, 35872990), (4, 17936495), (5, 14349196), (10, 7174598), (20, 3587299), (109, 658220), (218, 329110), (436, 164555), (545, 131644), (1090, 65822), (2180, 32911)]