20408365

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{881}}^1$

素因数の和:1040

約数の個数: 16

約数和(自身を含む): 25338096

約数和(自身を除く): 4929731

約数列:

[1, 5, 41, 113, 205, 565, 881, 4405, 4633, 23165, 36121, 99553, 180605, 497765, 4081673, 20408365]

約数ペア:

[(1, 20408365), (5, 4081673), (41, 497765), (113, 180605), (205, 99553), (565, 36121), (881, 23165), (4405, 4633)]