21587215

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 28591920

約数和(自身を除く): 7004705

約数列:

[1, 5, 13, 59, 65, 169, 295, 433, 767, 845, 2165, 3835, 5629, 9971, 25547, 28145, 49855, 73177, 127735, 332111, 365885, 1660555, 4317443, 21587215]

約数ペア:

[(1, 21587215), (5, 4317443), (13, 1660555), (59, 365885), (65, 332111), (169, 127735), (295, 73177), (433, 49855), (767, 28145), (845, 25547), (2165, 9971), (3835, 5629)]