71191660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{82781}}^1$

素因数の和:82833

約数の個数: 24

約数和(自身を含む): 152981136

約数和(自身を除く): 81789476

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 82781, 165562, 331124, 413905, 827810, 1655620, 3559583, 7119166, 14238332, 17797915, 35595830, 71191660]

約数ペア:

[(1, 71191660), (2, 35595830), (4, 17797915), (5, 14238332), (10, 7119166), (20, 3559583), (43, 1655620), (86, 827810), (172, 413905), (215, 331124), (430, 165562), (860, 82781)]