18867860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{617}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 43606080

約数和(自身を除く): 24738220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 617, 695, 1234, 1390, 1529, 2468, 2780, 3058, 3085, 6116, 6170, 6787, 7645, 12340, 13574, 15290, 27148, 30580, 33935, 67870, 85763, 135740, 171526, 343052, 428815, 857630, 943393, 1715260, 1886786, 3773572, 4716965, 9433930, 18867860]

約数ペア:

[(1, 18867860), (2, 9433930), (4, 4716965), (5, 3773572), (10, 1886786), (11, 1715260), (20, 943393), (22, 857630), (44, 428815), (55, 343052), (110, 171526), (139, 135740), (220, 85763), (278, 67870), (556, 33935), (617, 30580), (695, 27148), (1234, 15290), (1390, 13574), (1529, 12340), (2468, 7645), (2780, 6787), (3058, 6170), (3085, 6116)]