208587025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{3011}}^1$

素因数の和:3201

約数の個数: 24

約数和(自身を含む): 275634144

約数和(自身を除く): 67047119

約数列:

[1, 5, 17, 25, 85, 163, 425, 815, 2771, 3011, 4075, 13855, 15055, 51187, 69275, 75275, 255935, 490793, 1279675, 2453965, 8343481, 12269825, 41717405, 208587025]

約数ペア:

[(1, 208587025), (5, 41717405), (17, 12269825), (25, 8343481), (85, 2453965), (163, 1279675), (425, 490793), (815, 255935), (2771, 75275), (3011, 69275), (4075, 51187), (13855, 15055)]