128456426

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{398933}}^1$

素因数の和:398965

約数の個数: 16

約数和(自身を含む): 229785984

約数和(自身を除く): 101329558

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 398933, 797866, 2792531, 5585062, 9175459, 18350918, 64228213, 128456426]

約数ペア:

[(1, 128456426), (2, 64228213), (7, 18350918), (14, 9175459), (23, 5585062), (46, 2792531), (161, 797866), (322, 398933)]