21169745

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2239}}^1$

素因数の和:2336

約数の個数: 16

約数和(自身を含む): 26664960

約数和(自身を除く): 5495215

約数列:

[1, 5, 31, 61, 155, 305, 1891, 2239, 9455, 11195, 69409, 136579, 347045, 682895, 4233949, 21169745]

約数ペア:

[(1, 21169745), (5, 4233949), (31, 682895), (61, 347045), (155, 136579), (305, 69409), (1891, 11195), (2239, 9455)]