20593905

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 34069248

約数和(自身を除く): 13475343

約数列:

[1, 3, 5, 15, 61, 71, 183, 213, 305, 317, 355, 915, 951, 1065, 1585, 4331, 4755, 12993, 19337, 21655, 22507, 58011, 64965, 67521, 96685, 112535, 290055, 337605, 1372927, 4118781, 6864635, 20593905]

約数ペア:

[(1, 20593905), (3, 6864635), (5, 4118781), (15, 1372927), (61, 337605), (71, 290055), (183, 112535), (213, 96685), (305, 67521), (317, 64965), (355, 58011), (915, 22507), (951, 21655), (1065, 19337), (1585, 12993), (4331, 4755)]