2171620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9871}}^1$

素因数の和:9891

約数の個数: 24

約数和(自身を含む): 4975488

約数和(自身を除く): 2803868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9871, 19742, 39484, 49355, 98710, 108581, 197420, 217162, 434324, 542905, 1085810, 2171620]

約数ペア:

[(1, 2171620), (2, 1085810), (4, 542905), (5, 434324), (10, 217162), (11, 197420), (20, 108581), (22, 98710), (44, 49355), (55, 39484), (110, 19742), (220, 9871)]