21338440

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{761}}^1$

素因数の和:1473

約数の個数: 32

約数和(自身を含む): 48143160

約数和(自身を除く): 26804720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 761, 1402, 1522, 2804, 3044, 3505, 3805, 5608, 6088, 7010, 7610, 14020, 15220, 28040, 30440, 533461, 1066922, 2133844, 2667305, 4267688, 5334610, 10669220, 21338440]

約数ペア:

[(1, 21338440), (2, 10669220), (4, 5334610), (5, 4267688), (8, 2667305), (10, 2133844), (20, 1066922), (40, 533461), (701, 30440), (761, 28040), (1402, 15220), (1522, 14020), (2804, 7610), (3044, 7010), (3505, 6088), (3805, 5608)]