20372740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14347}}^1$

素因数の和:14427

約数の個数: 24

約数和(自身を含む): 43388352

約数和(自身を除く): 23015612

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14347, 28694, 57388, 71735, 143470, 286940, 1018637, 2037274, 4074548, 5093185, 10186370, 20372740]

約数ペア:

[(1, 20372740), (2, 10186370), (4, 5093185), (5, 4074548), (10, 2037274), (20, 1018637), (71, 286940), (142, 143470), (284, 71735), (355, 57388), (710, 28694), (1420, 14347)]