245333361

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{20899}}^1$

素因数の和:20965

約数の個数: 32

約数和(自身を含む): 411980800

約数和(自身を除く): 166647439

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 11739, 20899, 62697, 146293, 271687, 438879, 815061, 898657, 1901809, 2695971, 5705427, 6290599, 11682541, 18871797, 35047623, 81777787, 245333361]

約数ペア:

[(1, 245333361), (3, 81777787), (7, 35047623), (13, 18871797), (21, 11682541), (39, 6290599), (43, 5705427), (91, 2695971), (129, 1901809), (273, 898657), (301, 815061), (559, 438879), (903, 271687), (1677, 146293), (3913, 62697), (11739, 20899)]