21252115

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{1021}}^1$

素因数の和:1230

約数の個数: 16

約数和(自身を含む): 26784576

約数和(自身を除く): 5532461

約数列:

[1, 5, 23, 115, 181, 905, 1021, 4163, 5105, 20815, 23483, 117415, 184801, 924005, 4250423, 21252115]

約数ペア:

[(1, 21252115), (5, 4250423), (23, 924005), (115, 184801), (181, 117415), (905, 23483), (1021, 20815), (4163, 5105)]