21893641

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1$

素因数の和:445

約数の個数: 24

約数和(自身を含む): 28071360

約数和(自身を除く): 6177719

約数列:

[1, 7, 11, 49, 77, 151, 269, 539, 1057, 1661, 1883, 2959, 7399, 11627, 13181, 20713, 40619, 81389, 144991, 284333, 446809, 1990331, 3127663, 21893641]

約数ペア:

[(1, 21893641), (7, 3127663), (11, 1990331), (49, 446809), (77, 284333), (151, 144991), (269, 81389), (539, 40619), (1057, 20713), (1661, 13181), (1883, 11627), (2959, 7399)]