199290025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{65881}}^1$

素因数の和:65913

約数の個数: 18

約数和(自身を含む): 271631486

約数和(自身を除く): 72341461

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 65881, 329405, 724691, 1647025, 3623455, 7971601, 18117275, 39858005, 199290025]

約数ペア:

[(1, 199290025), (5, 39858005), (11, 18117275), (25, 7971601), (55, 3623455), (121, 1647025), (275, 724691), (605, 329405), (3025, 65881)]