89980816

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{40459}}^1$

素因数の和:40606

約数の個数: 20

約数和(自身を含む): 175596400

約数和(自身を除く): 85615584

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 40459, 80918, 161836, 323672, 647344, 5623801, 11247602, 22495204, 44990408, 89980816]

約数ペア:

[(1, 89980816), (2, 44990408), (4, 22495204), (8, 11247602), (16, 5623801), (139, 647344), (278, 323672), (556, 161836), (1112, 80918), (2224, 40459)]