128469740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{917641}}^1$

素因数の和:917657

約数の個数: 24

約数和(自身を含む): 308327712

約数和(自身を除く): 179857972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 917641, 1835282, 3670564, 4588205, 6423487, 9176410, 12846974, 18352820, 25693948, 32117435, 64234870, 128469740]

約数ペア:

[(1, 128469740), (2, 64234870), (4, 32117435), (5, 25693948), (7, 18352820), (10, 12846974), (14, 9176410), (20, 6423487), (28, 4588205), (35, 3670564), (70, 1835282), (140, 917641)]