21210485

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{1019}}^1$

素因数の和:1228

約数の個数: 16

約数和(自身を含む): 26732160

約数和(自身を除く): 5521675

約数列:

[1, 5, 23, 115, 181, 905, 1019, 4163, 5095, 20815, 23437, 117185, 184439, 922195, 4242097, 21210485]

約数ペア:

[(1, 21210485), (5, 4242097), (23, 922195), (115, 184439), (181, 117185), (905, 23437), (1019, 20815), (4163, 5095)]