213778975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{4129}}^1$

素因数の和:4267

約数の個数: 24

約数和(自身を含む): 281666000

約数和(自身を除く): 67887025

約数列:

[1, 5, 19, 25, 95, 109, 475, 545, 2071, 2725, 4129, 10355, 20645, 51775, 78451, 103225, 392255, 450061, 1961275, 2250305, 8551159, 11251525, 42755795, 213778975]

約数ペア:

[(1, 213778975), (5, 42755795), (19, 11251525), (25, 8551159), (95, 2250305), (109, 1961275), (475, 450061), (545, 392255), (2071, 103225), (2725, 78451), (4129, 51775), (10355, 20645)]