19967950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 19404530

約数列:

[1, 2, 5, 10, 25, 29, 47, 50, 58, 94, 145, 235, 290, 293, 470, 586, 725, 1175, 1363, 1450, 1465, 2350, 2726, 2930, 6815, 7325, 8497, 13630, 13771, 14650, 16994, 27542, 34075, 42485, 68150, 68855, 84970, 137710, 212425, 344275, 399359, 424850, 688550, 798718, 1996795, 3993590, 9983975, 19967950]

約数ペア:

[(1, 19967950), (2, 9983975), (5, 3993590), (10, 1996795), (25, 798718), (29, 688550), (47, 424850), (50, 399359), (58, 344275), (94, 212425), (145, 137710), (235, 84970), (290, 68855), (293, 68150), (470, 42485), (586, 34075), (725, 27542), (1175, 16994), (1363, 14650), (1450, 13771), (1465, 13630), (2350, 8497), (2726, 7325), (2930, 6815)]