405406940

素因数分解:

$2^2\times 5^1\times {\mathrm{1063}}^1\times {\mathrm{19069}}^1$

素因数の和:20141

約数の個数: 24

約数和(自身を含む): 852200160

約数和(自身を除く): 446793220

約数列:

[1, 2, 4, 5, 10, 20, 1063, 2126, 4252, 5315, 10630, 19069, 21260, 38138, 76276, 95345, 190690, 381380, 20270347, 40540694, 81081388, 101351735, 202703470, 405406940]

約数ペア:

[(1, 405406940), (2, 202703470), (4, 101351735), (5, 81081388), (10, 40540694), (20, 20270347), (1063, 381380), (2126, 190690), (4252, 95345), (5315, 76276), (10630, 38138), (19069, 21260)]