31219225

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 42826500

約数和(自身を除く): 11607275

約数列:

[1, 5, 17, 25, 29, 85, 145, 149, 289, 425, 493, 725, 745, 1445, 2465, 2533, 3725, 4321, 7225, 8381, 12325, 12665, 21605, 41905, 43061, 63325, 73457, 108025, 209525, 215305, 367285, 1076525, 1248769, 1836425, 6243845, 31219225]

約数ペア:

[(1, 31219225), (5, 6243845), (17, 1836425), (25, 1248769), (29, 1076525), (85, 367285), (145, 215305), (149, 209525), (289, 108025), (425, 73457), (493, 63325), (725, 43061), (745, 41905), (1445, 21605), (2465, 12665), (2533, 12325), (3725, 8381), (4321, 7225)]