12172225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 16973616

約数和(自身を除く): 4801391

約数列:

[1, 5, 13, 25, 43, 65, 67, 169, 215, 325, 335, 559, 845, 871, 1075, 1675, 2795, 2881, 4225, 4355, 7267, 11323, 13975, 14405, 21775, 36335, 37453, 56615, 72025, 181675, 187265, 283075, 486889, 936325, 2434445, 12172225]

約数ペア:

[(1, 12172225), (5, 2434445), (13, 936325), (25, 486889), (43, 283075), (65, 187265), (67, 181675), (169, 72025), (215, 56615), (325, 37453), (335, 36335), (559, 21775), (845, 14405), (871, 13975), (1075, 11323), (1675, 7267), (2795, 4355), (2881, 4225)]