21322685

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{479}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5288515

約数列:

[1, 5, 29, 145, 307, 479, 1535, 2395, 8903, 13891, 44515, 69455, 147053, 735265, 4264537, 21322685]

約数ペア:

[(1, 21322685), (5, 4264537), (29, 735265), (145, 147053), (307, 69455), (479, 44515), (1535, 13891), (2395, 8903)]