21187255

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{6353}}^1$

素因数の和:6410

約数の個数: 16

約数和(自身を含む): 27449280

約数和(自身を除く): 6262025

約数列:

[1, 5, 23, 29, 115, 145, 667, 3335, 6353, 31765, 146119, 184237, 730595, 921185, 4237451, 21187255]

約数ペア:

[(1, 21187255), (5, 4237451), (23, 921185), (29, 730595), (115, 184237), (145, 146119), (667, 31765), (3335, 6353)]