18979820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{55823}}^1$

素因数の和:55849

約数の個数: 24

約数和(自身を含む): 42202944

約数和(自身を除く): 23223124

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 55823, 111646, 223292, 279115, 558230, 948991, 1116460, 1897982, 3795964, 4744955, 9489910, 18979820]

約数ペア:

[(1, 18979820), (2, 9489910), (4, 4744955), (5, 3795964), (10, 1897982), (17, 1116460), (20, 948991), (34, 558230), (68, 279115), (85, 223292), (170, 111646), (340, 55823)]