81054575

素因数分解:

$5^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 118063872

約数和(自身を除く): 37009297

約数列:

[1, 5, 7, 25, 35, 49, 127, 175, 245, 521, 635, 889, 1225, 2605, 3175, 3647, 4445, 6223, 13025, 18235, 22225, 25529, 31115, 66167, 91175, 127645, 155575, 330835, 463169, 638225, 1654175, 2315845, 3242183, 11579225, 16210915, 81054575]

約数ペア:

[(1, 81054575), (5, 16210915), (7, 11579225), (25, 3242183), (35, 2315845), (49, 1654175), (127, 638225), (175, 463169), (245, 330835), (521, 155575), (635, 127645), (889, 91175), (1225, 66167), (2605, 31115), (3175, 25529), (3647, 22225), (4445, 18235), (6223, 13025)]