19910525

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1117}}^1$

素因数の和:1181

約数の個数: 24

約数和(自身を含む): 26617344

約数和(自身を除く): 6706819

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1117, 3565, 5585, 17825, 25691, 27925, 34627, 128455, 173135, 642275, 796421, 865675, 3982105, 19910525]

約数ペア:

[(1, 19910525), (5, 3982105), (23, 865675), (25, 796421), (31, 642275), (115, 173135), (155, 128455), (575, 34627), (713, 27925), (775, 25691), (1117, 17825), (3565, 5585)]