21065815

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{2207}}^1$

素因数の和:2318

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 5642153

約数列:

[1, 5, 23, 83, 115, 415, 1909, 2207, 9545, 11035, 50761, 183181, 253805, 915905, 4213163, 21065815]

約数ペア:

[(1, 21065815), (5, 4213163), (23, 915905), (83, 253805), (115, 183181), (415, 50761), (1909, 11035), (2207, 9545)]