18917404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{2251}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 36320256

約数和(自身を除く): 17402852

約数列:

[1, 2, 4, 11, 22, 44, 191, 382, 764, 2101, 2251, 4202, 4502, 8404, 9004, 24761, 49522, 99044, 429941, 859882, 1719764, 4729351, 9458702, 18917404]

約数ペア:

[(1, 18917404), (2, 9458702), (4, 4729351), (11, 1719764), (22, 859882), (44, 429941), (191, 99044), (382, 49522), (764, 24761), (2101, 9004), (2251, 8404), (4202, 4502)]