171275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 24

約数和(自身を含む): 249984

約数和(自身を除く): 78709

約数列:

[1, 5, 13, 17, 25, 31, 65, 85, 155, 221, 325, 403, 425, 527, 775, 1105, 2015, 2635, 5525, 6851, 10075, 13175, 34255, 171275]

約数ペア:

[(1, 171275), (5, 34255), (13, 13175), (17, 10075), (25, 6851), (31, 5525), (65, 2635), (85, 2015), (155, 1105), (221, 775), (325, 527), (403, 425)]