18057680

素因数分解:

$2^4\times 5^1\times {\mathrm{225721}}^1$

素因数の和:225734

約数の個数: 20

約数和(自身を含む): 41984292

約数和(自身を除く): 23926612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225721, 451442, 902884, 1128605, 1805768, 2257210, 3611536, 4514420, 9028840, 18057680]

約数ペア:

[(1, 18057680), (2, 9028840), (4, 4514420), (5, 3611536), (8, 2257210), (10, 1805768), (16, 1128605), (20, 902884), (40, 451442), (80, 225721)]