19857860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90263}}^1$

素因数の和:90283

約数の個数: 24

約数和(自身を含む): 45493056

約数和(自身を除く): 25635196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90263, 180526, 361052, 451315, 902630, 992893, 1805260, 1985786, 3971572, 4964465, 9928930, 19857860]

約数ペア:

[(1, 19857860), (2, 9928930), (4, 4964465), (5, 3971572), (10, 1985786), (11, 1805260), (20, 992893), (22, 902630), (44, 451315), (55, 361052), (110, 180526), (220, 90263)]