21279280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24181}}^1$

素因数の和:24205

約数の個数: 40

約数和(自身を含む): 53974224

約数和(自身を除く): 32694944

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24181, 48362, 96724, 120905, 193448, 241810, 265991, 386896, 483620, 531982, 967240, 1063964, 1329955, 1934480, 2127928, 2659910, 4255856, 5319820, 10639640, 21279280]

約数ペア:

[(1, 21279280), (2, 10639640), (4, 5319820), (5, 4255856), (8, 2659910), (10, 2127928), (11, 1934480), (16, 1329955), (20, 1063964), (22, 967240), (40, 531982), (44, 483620), (55, 386896), (80, 265991), (88, 241810), (110, 193448), (176, 120905), (220, 96724), (440, 48362), (880, 24181)]