127943380

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{15641}}^1$

素因数の和:16059

約数の個数: 24

約数和(自身を含む): 269355240

約数和(自身を除く): 141411860

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 15641, 31282, 62564, 78205, 156410, 312820, 6397169, 12794338, 25588676, 31985845, 63971690, 127943380]

約数ペア:

[(1, 127943380), (2, 63971690), (4, 31985845), (5, 25588676), (10, 12794338), (20, 6397169), (409, 312820), (818, 156410), (1636, 78205), (2045, 62564), (4090, 31282), (8180, 15641)]