20937995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3881}}^1$

素因数の和:3982

約数の個数: 16

約数和(自身を含む): 27391392

約数和(自身を除く): 6453397

約数列:

[1, 5, 13, 65, 83, 415, 1079, 3881, 5395, 19405, 50453, 252265, 322123, 1610615, 4187599, 20937995]

約数ペア:

[(1, 20937995), (5, 4187599), (13, 1610615), (65, 322123), (83, 252265), (415, 50453), (1079, 19405), (3881, 5395)]