21306345

素因数分解:

$3^1\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{1213}}^1$

素因数の和:2392

約数の個数: 16

約数和(自身を含む): 34147392

約数和(自身を除く): 12841047

約数列:

[1, 3, 5, 15, 1171, 1213, 3513, 3639, 5855, 6065, 17565, 18195, 1420423, 4261269, 7102115, 21306345]

約数ペア:

[(1, 21306345), (3, 7102115), (5, 4261269), (15, 1420423), (1171, 18195), (1213, 17565), (3513, 6065), (3639, 5855)]