20889715

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1871}}^1$

素因数の和:1923

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 11458445

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 1871, 2233, 9355, 11165, 13097, 20581, 54259, 65485, 102905, 144067, 271295, 379813, 596849, 720335, 1899065, 2984245, 4177943, 20889715]

約数ペア:

[(1, 20889715), (5, 4177943), (7, 2984245), (11, 1899065), (29, 720335), (35, 596849), (55, 379813), (77, 271295), (145, 144067), (203, 102905), (319, 65485), (385, 54259), (1015, 20581), (1595, 13097), (1871, 11165), (2233, 9355)]