494080360

素因数分解:

$2^3\times 5^1\times {\mathrm{12352009}}^1$

素因数の和:12352020

約数の個数: 16

約数和(自身を含む): 1111680900

約数和(自身を除く): 617600540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 12352009, 24704018, 49408036, 61760045, 98816072, 123520090, 247040180, 494080360]

約数ペア:

[(1, 494080360), (2, 247040180), (4, 123520090), (5, 98816072), (8, 61760045), (10, 49408036), (20, 24704018), (40, 12352009)]