221418275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{21977}}^1$

素因数の和:22031

約数の個数: 24

約数和(自身を含む): 305230464

約数和(自身を除く): 83812189

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 10075, 21977, 109885, 285701, 549425, 681287, 1428505, 3406435, 7142525, 8856731, 17032175, 44283655, 221418275]

約数ペア:

[(1, 221418275), (5, 44283655), (13, 17032175), (25, 8856731), (31, 7142525), (65, 3406435), (155, 1428505), (325, 681287), (403, 549425), (775, 285701), (2015, 109885), (10075, 21977)]