28704925

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1$

素因数の和:210

約数の個数: 36

約数和(自身を含む): 39400380

約数和(自身を除く): 10695455

約数列:

[1, 5, 17, 25, 29, 85, 137, 145, 289, 425, 493, 685, 725, 1445, 2329, 2465, 3425, 3973, 7225, 8381, 11645, 12325, 19865, 39593, 41905, 58225, 67541, 99325, 197965, 209525, 337705, 989825, 1148197, 1688525, 5740985, 28704925]

約数ペア:

[(1, 28704925), (5, 5740985), (17, 1688525), (25, 1148197), (29, 989825), (85, 337705), (137, 209525), (145, 197965), (289, 99325), (425, 67541), (493, 58225), (685, 41905), (725, 39593), (1445, 19865), (2329, 12325), (2465, 11645), (3425, 8381), (3973, 7225)]