20428870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:685

約数の個数: 64

約数和(自身を含む): 46987776

約数和(自身を除く): 26558906

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 70, 77, 86, 110, 154, 215, 301, 385, 430, 473, 602, 617, 770, 946, 1234, 1505, 2365, 3010, 3085, 3311, 4319, 4730, 6170, 6622, 6787, 8638, 13574, 16555, 21595, 26531, 33110, 33935, 43190, 47509, 53062, 67870, 95018, 132655, 185717, 237545, 265310, 291841, 371434, 475090, 583682, 928585, 1459205, 1857170, 2042887, 2918410, 4085774, 10214435, 20428870]

約数ペア:

[(1, 20428870), (2, 10214435), (5, 4085774), (7, 2918410), (10, 2042887), (11, 1857170), (14, 1459205), (22, 928585), (35, 583682), (43, 475090), (55, 371434), (70, 291841), (77, 265310), (86, 237545), (110, 185717), (154, 132655), (215, 95018), (301, 67870), (385, 53062), (430, 47509), (473, 43190), (602, 33935), (617, 33110), (770, 26531), (946, 21595), (1234, 16555), (1505, 13574), (2365, 8638), (3010, 6787), (3085, 6622), (3311, 6170), (4319, 4730)]