19405008004

素因数分解:

$2^2\times {\mathrm{21001}}^1\times {\mathrm{231001}}^1$

素因数の和:252006

約数の個数: 12

約数和(自身を含む): 33960528028

約数和(自身を除く): 14555520024

約数列:

[1, 2, 4, 21001, 42002, 84004, 231001, 462002, 924004, 4851252001, 9702504002, 19405008004]

約数ペア:

[(1, 19405008004), (2, 9702504002), (4, 4851252001), (21001, 924004), (42002, 462002), (84004, 231001)]