408032780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{187171}}^1$

素因数の和:187289

約数の個数: 24

約数和(自身を含む): 864734640

約数和(自身を除く): 456701860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 187171, 374342, 748684, 935855, 1871710, 3743420, 20401639, 40803278, 81606556, 102008195, 204016390, 408032780]

約数ペア:

[(1, 408032780), (2, 204016390), (4, 102008195), (5, 81606556), (10, 40803278), (20, 20401639), (109, 3743420), (218, 1871710), (436, 935855), (545, 748684), (1090, 374342), (2180, 187171)]