19765040

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2309}}^1$

素因数の和:2429

約数の個数: 40

約数和(自身を含む): 46403280

約数和(自身を除く): 26638240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2309, 4280, 4618, 8560, 9236, 11545, 18472, 23090, 36944, 46180, 92360, 184720, 247063, 494126, 988252, 1235315, 1976504, 2470630, 3953008, 4941260, 9882520, 19765040]

約数ペア:

[(1, 19765040), (2, 9882520), (4, 4941260), (5, 3953008), (8, 2470630), (10, 1976504), (16, 1235315), (20, 988252), (40, 494126), (80, 247063), (107, 184720), (214, 92360), (428, 46180), (535, 36944), (856, 23090), (1070, 18472), (1712, 11545), (2140, 9236), (2309, 8560), (4280, 4618)]