16320025

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:285

約数の個数: 24

約数和(自身を含む): 20991960

約数和(自身を除く): 4671935

約数列:

[1, 5, 25, 53, 109, 113, 265, 545, 565, 1325, 2725, 2825, 5777, 5989, 12317, 28885, 29945, 61585, 144425, 149725, 307925, 652801, 3264005, 16320025]

約数ペア:

[(1, 16320025), (5, 3264005), (25, 652801), (53, 307925), (109, 149725), (113, 144425), (265, 61585), (545, 29945), (565, 28885), (1325, 12317), (2725, 5989), (2825, 5777)]