31081025

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 39785400

約数和(自身を除く): 8704375

約数列:

[1, 5, 25, 61, 89, 229, 305, 445, 1145, 1525, 2225, 5429, 5725, 13969, 20381, 27145, 69845, 101905, 135725, 349225, 509525, 1243241, 6216205, 31081025]

約数ペア:

[(1, 31081025), (5, 6216205), (25, 1243241), (61, 509525), (89, 349225), (229, 135725), (305, 101905), (445, 69845), (1145, 27145), (1525, 20381), (2225, 13969), (5429, 5725)]