123420880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1009}}^1$

素因数の和:1172

約数の個数: 80

約数和(自身を含む): 315604800

約数和(自身を除く): 192183920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 176, 220, 278, 440, 556, 695, 880, 1009, 1112, 1390, 1529, 2018, 2224, 2780, 3058, 4036, 5045, 5560, 6116, 7645, 8072, 10090, 11099, 11120, 12232, 15290, 16144, 20180, 22198, 24464, 30580, 40360, 44396, 55495, 61160, 80720, 88792, 110990, 122320, 140251, 177584, 221980, 280502, 443960, 561004, 701255, 887920, 1122008, 1402510, 1542761, 2244016, 2805020, 3085522, 5610040, 6171044, 7713805, 11220080, 12342088, 15427610, 24684176, 30855220, 61710440, 123420880]

約数ペア:

[(1, 123420880), (2, 61710440), (4, 30855220), (5, 24684176), (8, 15427610), (10, 12342088), (11, 11220080), (16, 7713805), (20, 6171044), (22, 5610040), (40, 3085522), (44, 2805020), (55, 2244016), (80, 1542761), (88, 1402510), (110, 1122008), (139, 887920), (176, 701255), (220, 561004), (278, 443960), (440, 280502), (556, 221980), (695, 177584), (880, 140251), (1009, 122320), (1112, 110990), (1390, 88792), (1529, 80720), (2018, 61160), (2224, 55495), (2780, 44396), (3058, 40360), (4036, 30580), (5045, 24464), (5560, 22198), (6116, 20180), (7645, 16144), (8072, 15290), (10090, 12232), (11099, 11120)]