128900786

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{400313}}^1$

素因数の和:400345

約数の個数: 16

約数和(自身を含む): 230580864

約数和(自身を除く): 101680078

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 400313, 800626, 2802191, 5604382, 9207199, 18414398, 64450393, 128900786]

約数ペア:

[(1, 128900786), (2, 64450393), (7, 18414398), (14, 9207199), (23, 5604382), (46, 2802191), (161, 800626), (322, 400313)]