20853925

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 27880160

約数和(自身を除く): 7026235

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1021, 1075, 4085, 5105, 19399, 20425, 25525, 43903, 96995, 219515, 484975, 834157, 1097575, 4170785, 20853925]

約数ペア:

[(1, 20853925), (5, 4170785), (19, 1097575), (25, 834157), (43, 484975), (95, 219515), (215, 96995), (475, 43903), (817, 25525), (1021, 20425), (1075, 19399), (4085, 5105)]