18929020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{619}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 24818180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 619, 695, 1238, 1390, 1529, 2476, 2780, 3058, 3095, 6116, 6190, 6809, 7645, 12380, 13618, 15290, 27236, 30580, 34045, 68090, 86041, 136180, 172082, 344164, 430205, 860410, 946451, 1720820, 1892902, 3785804, 4732255, 9464510, 18929020]

約数ペア:

[(1, 18929020), (2, 9464510), (4, 4732255), (5, 3785804), (10, 1892902), (11, 1720820), (20, 946451), (22, 860410), (44, 430205), (55, 344164), (110, 172082), (139, 136180), (220, 86041), (278, 68090), (556, 34045), (619, 30580), (695, 27236), (1238, 15290), (1390, 13618), (1529, 12380), (2476, 7645), (2780, 6809), (3058, 6190), (3095, 6116)]