31439421

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:507

約数の個数: 40

約数和(自身を含む): 51395960

約数和(自身を除く): 19956539

約数列:

[1, 3, 9, 13, 27, 39, 73, 81, 117, 219, 351, 409, 657, 949, 1053, 1227, 1971, 2847, 3681, 5317, 5913, 8541, 11043, 15951, 25623, 29857, 33129, 47853, 76869, 89571, 143559, 268713, 388141, 430677, 806139, 1164423, 2418417, 3493269, 10479807, 31439421]

約数ペア:

[(1, 31439421), (3, 10479807), (9, 3493269), (13, 2418417), (27, 1164423), (39, 806139), (73, 430677), (81, 388141), (117, 268713), (219, 143559), (351, 89571), (409, 76869), (657, 47853), (949, 33129), (1053, 29857), (1227, 25623), (1971, 15951), (2847, 11043), (3681, 8541), (5317, 5913)]