19889860

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3697}}^1$

素因数の和:3975

約数の個数: 24

約数和(自身を含む): 41935320

約数和(自身を除く): 22045460

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3697, 5380, 7394, 14788, 18485, 36970, 73940, 994493, 1988986, 3977972, 4972465, 9944930, 19889860]

約数ペア:

[(1, 19889860), (2, 9944930), (4, 4972465), (5, 3977972), (10, 1988986), (20, 994493), (269, 73940), (538, 36970), (1076, 18485), (1345, 14788), (2690, 7394), (3697, 5380)]