18110620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 41803776

約数和(自身を除く): 23693156

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 191, 220, 382, 431, 764, 862, 955, 1724, 1910, 2101, 2155, 3820, 4202, 4310, 4741, 8404, 8620, 9482, 10505, 18964, 21010, 23705, 42020, 47410, 82321, 94820, 164642, 329284, 411605, 823210, 905531, 1646420, 1811062, 3622124, 4527655, 9055310, 18110620]

約数ペア:

[(1, 18110620), (2, 9055310), (4, 4527655), (5, 3622124), (10, 1811062), (11, 1646420), (20, 905531), (22, 823210), (44, 411605), (55, 329284), (110, 164642), (191, 94820), (220, 82321), (382, 47410), (431, 42020), (764, 23705), (862, 21010), (955, 18964), (1724, 10505), (1910, 9482), (2101, 8620), (2155, 8404), (3820, 4741), (4202, 4310)]