18777820

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1193}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 39516624

約数和(自身を除く): 20738804

約数列:

[1, 2, 4, 5, 10, 20, 787, 1193, 1574, 2386, 3148, 3935, 4772, 5965, 7870, 11930, 15740, 23860, 938891, 1877782, 3755564, 4694455, 9388910, 18777820]

約数ペア:

[(1, 18777820), (2, 9388910), (4, 4694455), (5, 3755564), (10, 1877782), (20, 938891), (787, 23860), (1193, 15740), (1574, 11930), (2386, 7870), (3148, 5965), (3935, 4772)]