21255865

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{2213}}^1$

素因数の和:2348

約数の個数: 16

約数和(自身を含む): 27258768

約数和(自身を除く): 6002903

約数列:

[1, 5, 17, 85, 113, 565, 1921, 2213, 9605, 11065, 37621, 188105, 250069, 1250345, 4251173, 21255865]

約数ペア:

[(1, 21255865), (5, 4251173), (17, 1250345), (85, 250069), (113, 188105), (565, 37621), (1921, 11065), (2213, 9605)]