21273520

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7187}}^1$

素因数の和:7237

約数の個数: 40

約数和(自身を含む): 50804784

約数和(自身を除く): 29531264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7187, 14374, 28748, 35935, 57496, 71870, 114992, 143740, 265919, 287480, 531838, 574960, 1063676, 1329595, 2127352, 2659190, 4254704, 5318380, 10636760, 21273520]

約数ペア:

[(1, 21273520), (2, 10636760), (4, 5318380), (5, 4254704), (8, 2659190), (10, 2127352), (16, 1329595), (20, 1063676), (37, 574960), (40, 531838), (74, 287480), (80, 265919), (148, 143740), (185, 114992), (296, 71870), (370, 57496), (592, 35935), (740, 28748), (1480, 14374), (2960, 7187)]