25381719

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 42591744

約数和(自身を除く): 17210025

約数列:

[1, 3, 9, 11, 23, 33, 69, 71, 99, 157, 207, 213, 253, 471, 639, 759, 781, 1413, 1633, 1727, 2277, 2343, 3611, 4899, 5181, 7029, 10833, 11147, 14697, 15543, 17963, 32499, 33441, 39721, 53889, 100323, 119163, 122617, 161667, 256381, 357489, 367851, 769143, 1103553, 2307429, 2820191, 8460573, 25381719]

約数ペア:

[(1, 25381719), (3, 8460573), (9, 2820191), (11, 2307429), (23, 1103553), (33, 769143), (69, 367851), (71, 357489), (99, 256381), (157, 161667), (207, 122617), (213, 119163), (253, 100323), (471, 53889), (639, 39721), (759, 33441), (781, 32499), (1413, 17963), (1633, 15543), (1727, 14697), (2277, 11147), (2343, 10833), (3611, 7029), (4899, 5181)]