20778156

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{11779}}^1$

素因数の和:11803

約数の個数: 54

約数和(自身を含む): 61102860

約数和(自身を除く): 40324704

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 441, 588, 882, 1764, 11779, 23558, 35337, 47116, 70674, 82453, 106011, 141348, 164906, 212022, 247359, 329812, 424044, 494718, 577171, 742077, 989436, 1154342, 1484154, 1731513, 2308684, 2968308, 3463026, 5194539, 6926052, 10389078, 20778156]

約数ペア:

[(1, 20778156), (2, 10389078), (3, 6926052), (4, 5194539), (6, 3463026), (7, 2968308), (9, 2308684), (12, 1731513), (14, 1484154), (18, 1154342), (21, 989436), (28, 742077), (36, 577171), (42, 494718), (49, 424044), (63, 329812), (84, 247359), (98, 212022), (126, 164906), (147, 141348), (196, 106011), (252, 82453), (294, 70674), (441, 47116), (588, 35337), (882, 23558), (1764, 11779)]