20008220

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3719}}^1$

素因数の和:3997

約数の個数: 24

約数和(自身を含む): 42184800

約数和(自身を除く): 22176580

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3719, 5380, 7438, 14876, 18595, 37190, 74380, 1000411, 2000822, 4001644, 5002055, 10004110, 20008220]

約数ペア:

[(1, 20008220), (2, 10004110), (4, 5002055), (5, 4001644), (10, 2000822), (20, 1000411), (269, 74380), (538, 37190), (1076, 18595), (1345, 14876), (2690, 7438), (3719, 5380)]