645480860

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{285611}}^1$

素因数の和:285733

約数の個数: 24

約数和(自身を含む): 1367510256

約数和(自身を除く): 722029396

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 285611, 571222, 1142444, 1428055, 2856110, 5712220, 32274043, 64548086, 129096172, 161370215, 322740430, 645480860]

約数ペア:

[(1, 645480860), (2, 322740430), (4, 161370215), (5, 129096172), (10, 64548086), (20, 32274043), (113, 5712220), (226, 2856110), (452, 1428055), (565, 1142444), (1130, 571222), (2260, 285611)]