20180156405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^2\times {\mathrm{42139}}^1$

素因数の和:42305

約数の個数: 24

約数和(自身を含む): 25855418400

約数和(自身を除く): 5675261995

約数列:

[1, 5, 19, 71, 95, 355, 1349, 5041, 6745, 25205, 42139, 95779, 210695, 478895, 800641, 2991869, 4003205, 14959345, 56845511, 212422699, 284227555, 1062113495, 4036031281, 20180156405]

約数ペア:

[(1, 20180156405), (5, 4036031281), (19, 1062113495), (71, 284227555), (95, 212422699), (355, 56845511), (1349, 14959345), (5041, 4003205), (6745, 2991869), (25205, 800641), (42139, 478895), (95779, 210695)]