12981815

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4817}}^1$

素因数の和:4847

約数の個数: 24

約数和(自身を含む): 19773072

約数和(自身を除く): 6791257

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 4817, 24085, 33719, 52987, 168595, 236033, 264935, 370909, 1180165, 1854545, 2596363, 12981815]

約数ペア:

[(1, 12981815), (5, 2596363), (7, 1854545), (11, 1180165), (35, 370909), (49, 264935), (55, 236033), (77, 168595), (245, 52987), (385, 33719), (539, 24085), (2695, 4817)]