90904990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{811}}^1\times {\mathrm{1019}}^1$

素因数の和:1848

約数の個数: 32

約数和(自身を含む): 178899840

約数和(自身を除く): 87994850

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 811, 1019, 1622, 2038, 4055, 5095, 8110, 8921, 10190, 11209, 17842, 22418, 44605, 56045, 89210, 112090, 826409, 1652818, 4132045, 8264090, 9090499, 18180998, 45452495, 90904990]

約数ペア:

[(1, 90904990), (2, 45452495), (5, 18180998), (10, 9090499), (11, 8264090), (22, 4132045), (55, 1652818), (110, 826409), (811, 112090), (1019, 89210), (1622, 56045), (2038, 44605), (4055, 22418), (5095, 17842), (8110, 11209), (8921, 10190)]