27978275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2777}}^1$

素因数の和:2831

約数の個数: 24

約数和(自身を含む): 38580864

約数和(自身を除く): 10602589

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2777, 10075, 13885, 36101, 69425, 86087, 180505, 430435, 902525, 1119131, 2152175, 5595655, 27978275]

約数ペア:

[(1, 27978275), (5, 5595655), (13, 2152175), (25, 1119131), (31, 902525), (65, 430435), (155, 180505), (325, 86087), (403, 69425), (775, 36101), (2015, 13885), (2777, 10075)]