13265721

素因数分解:

$3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:331

約数の個数: 48

約数和(自身を含む): 23566080

約数和(自身を除く): 10300359

約数列:

[1, 3, 7, 9, 21, 27, 37, 49, 63, 111, 147, 189, 259, 271, 333, 441, 777, 813, 999, 1323, 1813, 1897, 2331, 2439, 5439, 5691, 6993, 7317, 10027, 13279, 16317, 17073, 30081, 39837, 48951, 51219, 70189, 90243, 119511, 210567, 270729, 358533, 491323, 631701, 1473969, 1895103, 4421907, 13265721]

約数ペア:

[(1, 13265721), (3, 4421907), (7, 1895103), (9, 1473969), (21, 631701), (27, 491323), (37, 358533), (49, 270729), (63, 210567), (111, 119511), (147, 90243), (189, 70189), (259, 51219), (271, 48951), (333, 39837), (441, 30081), (777, 17073), (813, 16317), (999, 13279), (1323, 10027), (1813, 7317), (1897, 6993), (2331, 5691), (2439, 5439)]