81793640

素因数分解:

$2^3\times 5^1\times {\mathrm{2044841}}^1$

素因数の和:2044852

約数の個数: 16

約数和(自身を含む): 184035780

約数和(自身を除く): 102242140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2044841, 4089682, 8179364, 10224205, 16358728, 20448410, 40896820, 81793640]

約数ペア:

[(1, 81793640), (2, 40896820), (4, 20448410), (5, 16358728), (8, 10224205), (10, 8179364), (20, 4089682), (40, 2044841)]