19665825

素因数分解:

$3^1\times 5^2\times {\mathrm{263}}^1\times {\mathrm{997}}^1$

素因数の和:1273

約数の個数: 24

約数和(自身を含む): 32670528

約数和(自身を除く): 13004703

約数列:

[1, 3, 5, 15, 25, 75, 263, 789, 997, 1315, 2991, 3945, 4985, 6575, 14955, 19725, 24925, 74775, 262211, 786633, 1311055, 3933165, 6555275, 19665825]

約数ペア:

[(1, 19665825), (3, 6555275), (5, 3933165), (15, 1311055), (25, 786633), (75, 262211), (263, 74775), (789, 24925), (997, 19725), (1315, 14955), (2991, 6575), (3945, 4985)]