20254760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{919}}^1$

素因数の和:978

約数の個数: 64

約数和(自身を含む): 49680000

約数和(自身を除く): 29425240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 116, 145, 152, 190, 232, 290, 380, 551, 580, 760, 919, 1102, 1160, 1838, 2204, 2755, 3676, 4408, 4595, 5510, 7352, 9190, 11020, 17461, 18380, 22040, 26651, 34922, 36760, 53302, 69844, 87305, 106604, 133255, 139688, 174610, 213208, 266510, 349220, 506369, 533020, 698440, 1012738, 1066040, 2025476, 2531845, 4050952, 5063690, 10127380, 20254760]

約数ペア:

[(1, 20254760), (2, 10127380), (4, 5063690), (5, 4050952), (8, 2531845), (10, 2025476), (19, 1066040), (20, 1012738), (29, 698440), (38, 533020), (40, 506369), (58, 349220), (76, 266510), (95, 213208), (116, 174610), (145, 139688), (152, 133255), (190, 106604), (232, 87305), (290, 69844), (380, 53302), (551, 36760), (580, 34922), (760, 26651), (919, 22040), (1102, 18380), (1160, 17461), (1838, 11020), (2204, 9190), (2755, 7352), (3676, 5510), (4408, 4595)]