21395739

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1\times {\mathrm{293}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 29028384

約数和(自身を除く): 7632645

約数列:

[1, 3, 101, 241, 293, 303, 723, 879, 24341, 29593, 70613, 73023, 88779, 211839, 7131913, 21395739]

約数ペア:

[(1, 21395739), (3, 7131913), (101, 211839), (241, 88779), (293, 73023), (303, 70613), (723, 29593), (879, 24341)]