20656540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33317}}^1$

素因数の和:33357

約数の個数: 24

約数和(自身を含む): 44779392

約数和(自身を除く): 24122852

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33317, 66634, 133268, 166585, 333170, 666340, 1032827, 2065654, 4131308, 5164135, 10328270, 20656540]

約数ペア:

[(1, 20656540), (2, 10328270), (4, 5164135), (5, 4131308), (10, 2065654), (20, 1032827), (31, 666340), (62, 333170), (124, 166585), (155, 133268), (310, 66634), (620, 33317)]