18561851

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 24772608

約数和(自身を除く): 6210757

約数列:

[1, 7, 11, 23, 47, 77, 161, 223, 253, 329, 517, 1081, 1561, 1771, 2453, 3619, 5129, 7567, 10481, 11891, 17171, 35903, 56419, 73367, 83237, 115291, 241063, 394933, 807037, 1687441, 2651693, 18561851]

約数ペア:

[(1, 18561851), (7, 2651693), (11, 1687441), (23, 807037), (47, 394933), (77, 241063), (161, 115291), (223, 83237), (253, 73367), (329, 56419), (517, 35903), (1081, 17171), (1561, 11891), (1771, 10481), (2453, 7567), (3619, 5129)]