18890638

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:652

約数の個数: 32

約数和(自身を含む): 32780160

約数和(自身を除く): 13889522

約数列:

[1, 2, 13, 17, 26, 34, 79, 158, 221, 442, 541, 1027, 1082, 1343, 2054, 2686, 7033, 9197, 14066, 17459, 18394, 34918, 42739, 85478, 119561, 239122, 555607, 726563, 1111214, 1453126, 9445319, 18890638]

約数ペア:

[(1, 18890638), (2, 9445319), (13, 1453126), (17, 1111214), (26, 726563), (34, 555607), (79, 239122), (158, 119561), (221, 85478), (442, 42739), (541, 34918), (1027, 18394), (1082, 17459), (1343, 14066), (2054, 9197), (2686, 7033)]