20781922

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3011}}^1$

素因数の和:3066

約数の個数: 32

約数和(自身を含む): 39035520

約数和(自身を除く): 18253598

約数列:

[1, 2, 7, 14, 17, 29, 34, 58, 119, 203, 238, 406, 493, 986, 3011, 3451, 6022, 6902, 21077, 42154, 51187, 87319, 102374, 174638, 358309, 611233, 716618, 1222466, 1484423, 2968846, 10390961, 20781922]

約数ペア:

[(1, 20781922), (2, 10390961), (7, 2968846), (14, 1484423), (17, 1222466), (29, 716618), (34, 611233), (58, 358309), (119, 174638), (203, 102374), (238, 87319), (406, 51187), (493, 42154), (986, 21077), (3011, 6902), (3451, 6022)]