18981008

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{20107}}^1$

素因数の和:20174

約数の個数: 20

約数和(自身を含む): 37400880

約数和(自身を除く): 18419872

約数列:

[1, 2, 4, 8, 16, 59, 118, 236, 472, 944, 20107, 40214, 80428, 160856, 321712, 1186313, 2372626, 4745252, 9490504, 18981008]

約数ペア:

[(1, 18981008), (2, 9490504), (4, 4745252), (8, 2372626), (16, 1186313), (59, 321712), (118, 160856), (236, 80428), (472, 40214), (944, 20107)]