8162780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21481}}^1$

素因数の和:21509

約数の個数: 24

約数和(自身を含む): 18044880

約数和(自身を除く): 9882100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 21481, 42962, 85924, 107405, 214810, 408139, 429620, 816278, 1632556, 2040695, 4081390, 8162780]

約数ペア:

[(1, 8162780), (2, 4081390), (4, 2040695), (5, 1632556), (10, 816278), (19, 429620), (20, 408139), (38, 214810), (76, 107405), (95, 85924), (190, 42962), (380, 21481)]