278416225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{4019}}^1$

素因数の和:4209

約数の個数: 24

約数和(自身を含む): 367878240

約数和(自身を除く): 89462015

約数列:

[1, 5, 17, 25, 85, 163, 425, 815, 2771, 4019, 4075, 13855, 20095, 68323, 69275, 100475, 341615, 655097, 1708075, 3275485, 11136649, 16377425, 55683245, 278416225]

約数ペア:

[(1, 278416225), (5, 55683245), (17, 16377425), (25, 11136649), (85, 3275485), (163, 1708075), (425, 655097), (815, 341615), (2771, 100475), (4019, 69275), (4075, 68323), (13855, 20095)]