21501895

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{1033}}^1$

素因数の和:1242

約数の個数: 16

約数和(自身を含む): 27099072

約数和(自身を除く): 5597177

約数列:

[1, 5, 23, 115, 181, 905, 1033, 4163, 5165, 20815, 23759, 118795, 186973, 934865, 4300379, 21501895]

約数ペア:

[(1, 21501895), (5, 4300379), (23, 934865), (115, 186973), (181, 118795), (905, 23759), (1033, 20815), (4163, 5165)]