19795760

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2551}}^1$

素因数の和:2661

約数の個数: 40

約数和(自身を含む): 46517856

約数和(自身を除く): 26722096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2551, 3880, 5102, 7760, 10204, 12755, 20408, 25510, 40816, 51020, 102040, 204080, 247447, 494894, 989788, 1237235, 1979576, 2474470, 3959152, 4948940, 9897880, 19795760]

約数ペア:

[(1, 19795760), (2, 9897880), (4, 4948940), (5, 3959152), (8, 2474470), (10, 1979576), (16, 1237235), (20, 989788), (40, 494894), (80, 247447), (97, 204080), (194, 102040), (388, 51020), (485, 40816), (776, 25510), (970, 20408), (1552, 12755), (1940, 10204), (2551, 7760), (3880, 5102)]