128988818

素因数分解:

$2^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{21377}}^1$

素因数の和:21817

約数の個数: 16

約数和(自身を含む): 221647104

約数和(自身を除く): 92658286

約数列:

[1, 2, 7, 14, 431, 862, 3017, 6034, 21377, 42754, 149639, 299278, 9213487, 18426974, 64494409, 128988818]

約数ペア:

[(1, 128988818), (2, 64494409), (7, 18426974), (14, 9213487), (431, 299278), (862, 149639), (3017, 42754), (6034, 21377)]