81987790

素因数分解:

$2^1\times 5^1\times {\mathrm{2129}}^1\times {\mathrm{3851}}^1$

素因数の和:5987

約数の個数: 16

約数和(自身を含む): 147685680

約数和(自身を除く): 65697890

約数列:

[1, 2, 5, 10, 2129, 3851, 4258, 7702, 10645, 19255, 21290, 38510, 8198779, 16397558, 40993895, 81987790]

約数ペア:

[(1, 81987790), (2, 40993895), (5, 16397558), (10, 8198779), (2129, 38510), (3851, 21290), (4258, 19255), (7702, 10645)]