28481980

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2161}}^1$

素因数の和:2829

約数の個数: 24

約数和(自身を含む): 59930640

約数和(自身を除く): 31448660

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2161, 2636, 3295, 4322, 6590, 8644, 10805, 13180, 21610, 43220, 1424099, 2848198, 5696396, 7120495, 14240990, 28481980]

約数ペア:

[(1, 28481980), (2, 14240990), (4, 7120495), (5, 5696396), (10, 2848198), (20, 1424099), (659, 43220), (1318, 21610), (2161, 13180), (2636, 10805), (3295, 8644), (4322, 6590)]