21058040

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{751}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 47511360

約数和(自身を除く): 26453320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 751, 1402, 1502, 2804, 3004, 3505, 3755, 5608, 6008, 7010, 7510, 14020, 15020, 28040, 30040, 526451, 1052902, 2105804, 2632255, 4211608, 5264510, 10529020, 21058040]

約数ペア:

[(1, 21058040), (2, 10529020), (4, 5264510), (5, 4211608), (8, 2632255), (10, 2105804), (20, 1052902), (40, 526451), (701, 30040), (751, 28040), (1402, 15020), (1502, 14020), (2804, 7510), (3004, 7010), (3505, 6008), (3755, 5608)]