20456620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5651}}^1$

素因数の和:5841

約数の個数: 24

約数和(自身を含む): 43203888

約数和(自身を除く): 22747268

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5651, 11302, 22604, 28255, 56510, 113020, 1022831, 2045662, 4091324, 5114155, 10228310, 20456620]

約数ペア:

[(1, 20456620), (2, 10228310), (4, 5114155), (5, 4091324), (10, 2045662), (20, 1022831), (181, 113020), (362, 56510), (724, 28255), (905, 22604), (1810, 11302), (3620, 5651)]