21263740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22621}}^1$

素因数の和:22677

約数の個数: 24

約数和(自身を含む): 45605952

約数和(自身を除く): 24342212

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22621, 45242, 90484, 113105, 226210, 452420, 1063187, 2126374, 4252748, 5315935, 10631870, 21263740]

約数ペア:

[(1, 21263740), (2, 10631870), (4, 5315935), (5, 4252748), (10, 2126374), (20, 1063187), (47, 452420), (94, 226210), (188, 113105), (235, 90484), (470, 45242), (940, 22621)]