81469040

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4447}}^1$

素因数の和:4689

約数の個数: 40

約数和(自身を含む): 190285440

約数和(自身を除く): 108816400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1145, 1832, 2290, 3664, 4447, 4580, 8894, 9160, 17788, 18320, 22235, 35576, 44470, 71152, 88940, 177880, 355760, 1018363, 2036726, 4073452, 5091815, 8146904, 10183630, 16293808, 20367260, 40734520, 81469040]

約数ペア:

[(1, 81469040), (2, 40734520), (4, 20367260), (5, 16293808), (8, 10183630), (10, 8146904), (16, 5091815), (20, 4073452), (40, 2036726), (80, 1018363), (229, 355760), (458, 177880), (916, 88940), (1145, 71152), (1832, 44470), (2290, 35576), (3664, 22235), (4447, 18320), (4580, 17788), (8894, 9160)]