138435280

素因数分解:

$2^4\times 5^1\times {\mathrm{1730441}}^1$

素因数の和:1730454

約数の個数: 20

約数和(自身を含む): 321862212

約数和(自身を除く): 183426932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1730441, 3460882, 6921764, 8652205, 13843528, 17304410, 27687056, 34608820, 69217640, 138435280]

約数ペア:

[(1, 138435280), (2, 69217640), (4, 34608820), (5, 27687056), (8, 17304410), (10, 13843528), (16, 8652205), (20, 6921764), (40, 3460882), (80, 1730441)]