128638406

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{12277}}^1$

素因数の和:12336

約数の個数: 24

約数和(自身を含む): 215699904

約数和(自身を除く): 87061498

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 5239, 10478, 12277, 24554, 159601, 319202, 380587, 761174, 2074813, 4149626, 4947631, 9895262, 64319203, 128638406]

約数ペア:

[(1, 128638406), (2, 64319203), (13, 9895262), (26, 4947631), (31, 4149626), (62, 2074813), (169, 761174), (338, 380587), (403, 319202), (806, 159601), (5239, 24554), (10478, 12277)]