12720357

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 21490560

約数和(自身を除く): 8770203

約数列:

[1, 3, 9, 13, 23, 29, 39, 69, 87, 117, 163, 207, 261, 299, 377, 489, 667, 897, 1131, 1467, 2001, 2119, 2691, 3393, 3749, 4727, 6003, 6357, 8671, 11247, 14181, 19071, 26013, 33741, 42543, 48737, 61451, 78039, 108721, 146211, 184353, 326163, 438633, 553059, 978489, 1413373, 4240119, 12720357]

約数ペア:

[(1, 12720357), (3, 4240119), (9, 1413373), (13, 978489), (23, 553059), (29, 438633), (39, 326163), (69, 184353), (87, 146211), (117, 108721), (163, 78039), (207, 61451), (261, 48737), (299, 42543), (377, 33741), (489, 26013), (667, 19071), (897, 14181), (1131, 11247), (1467, 8671), (2001, 6357), (2119, 6003), (2691, 4727), (3393, 3749)]