12903709

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 16547328

約数和(自身を除く): 3643619

約数列:

[1, 7, 13, 47, 49, 91, 329, 431, 611, 637, 2303, 3017, 4277, 5603, 20257, 21119, 29939, 39221, 141799, 263341, 274547, 992593, 1843387, 12903709]

約数ペア:

[(1, 12903709), (7, 1843387), (13, 992593), (47, 274547), (49, 263341), (91, 141799), (329, 39221), (431, 29939), (611, 21119), (637, 20257), (2303, 5603), (3017, 4277)]