20572220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33181}}^1$

素因数の和:33221

約数の個数: 24

約数和(自身を含む): 44596608

約数和(自身を除く): 24024388

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33181, 66362, 132724, 165905, 331810, 663620, 1028611, 2057222, 4114444, 5143055, 10286110, 20572220]

約数ペア:

[(1, 20572220), (2, 10286110), (4, 5143055), (5, 4114444), (10, 2057222), (20, 1028611), (31, 663620), (62, 331810), (124, 165905), (155, 132724), (310, 66362), (620, 33181)]