19218920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{68639}}^1$

素因数の和:68657

約数の個数: 32

約数和(自身を含む): 49420800

約数和(自身を除く): 30201880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 68639, 137278, 274556, 343195, 480473, 549112, 686390, 960946, 1372780, 1921892, 2402365, 2745560, 3843784, 4804730, 9609460, 19218920]

約数ペア:

[(1, 19218920), (2, 9609460), (4, 4804730), (5, 3843784), (7, 2745560), (8, 2402365), (10, 1921892), (14, 1372780), (20, 960946), (28, 686390), (35, 549112), (40, 480473), (56, 343195), (70, 274556), (140, 137278), (280, 68639)]