20115820

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3739}}^1$

素因数の和:4017

約数の個数: 24

約数和(自身を含む): 42411600

約数和(自身を除く): 22295780

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3739, 5380, 7478, 14956, 18695, 37390, 74780, 1005791, 2011582, 4023164, 5028955, 10057910, 20115820]

約数ペア:

[(1, 20115820), (2, 10057910), (4, 5028955), (5, 4023164), (10, 2011582), (20, 1005791), (269, 74780), (538, 37390), (1076, 18695), (1345, 14956), (2690, 7478), (3739, 5380)]