21220005

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19379}}^1$

素因数の和:19460

約数の個数: 16

約数和(自身を含む): 34418880

約数和(自身を除く): 13198875

約数列:

[1, 3, 5, 15, 73, 219, 365, 1095, 19379, 58137, 96895, 290685, 1414667, 4244001, 7073335, 21220005]

約数ペア:

[(1, 21220005), (3, 7073335), (5, 4244001), (15, 1414667), (73, 290685), (219, 96895), (365, 58137), (1095, 19379)]