215517415

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 293983200

約数和(自身を除く): 78465785

約数列:

[1, 5, 17, 29, 37, 85, 139, 145, 185, 289, 493, 629, 695, 1073, 1445, 2363, 2465, 3145, 4031, 5143, 5365, 8381, 10693, 11815, 18241, 20155, 25715, 40171, 41905, 53465, 68527, 87431, 91205, 149147, 200855, 310097, 342635, 437155, 745735, 1164959, 1486327, 1550485, 2535499, 5824795, 7431635, 12677495, 43103483, 215517415]

約数ペア:

[(1, 215517415), (5, 43103483), (17, 12677495), (29, 7431635), (37, 5824795), (85, 2535499), (139, 1550485), (145, 1486327), (185, 1164959), (289, 745735), (493, 437155), (629, 342635), (695, 310097), (1073, 200855), (1445, 149147), (2363, 91205), (2465, 87431), (3145, 68527), (4031, 53465), (5143, 41905), (5365, 40171), (8381, 25715), (10693, 20155), (11815, 18241)]