21447820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36979}}^1$

素因数の和:37017

約数の個数: 24

約数和(自身を含む): 46594800

約数和(自身を除く): 25146980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36979, 73958, 147916, 184895, 369790, 739580, 1072391, 2144782, 4289564, 5361955, 10723910, 21447820]

約数ペア:

[(1, 21447820), (2, 10723910), (4, 5361955), (5, 4289564), (10, 2144782), (20, 1072391), (29, 739580), (58, 369790), (116, 184895), (145, 147916), (290, 73958), (580, 36979)]