81698825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 111848868

約数和(自身を除く): 30150043

約数列:

[1, 5, 13, 25, 61, 65, 169, 305, 317, 325, 793, 845, 1525, 1585, 3965, 4121, 4225, 7925, 10309, 19337, 19825, 20605, 51545, 53573, 96685, 103025, 251381, 257725, 267865, 483425, 1256905, 1339325, 3267953, 6284525, 16339765, 81698825]

約数ペア:

[(1, 81698825), (5, 16339765), (13, 6284525), (25, 3267953), (61, 1339325), (65, 1256905), (169, 483425), (305, 267865), (317, 257725), (325, 251381), (793, 103025), (845, 96685), (1525, 53573), (1585, 51545), (3965, 20605), (4121, 19825), (4225, 19337), (7925, 10309)]