87470831

素因数分解:

$7^4\times {\mathrm{17}}^1\times {\mathrm{2143}}^1$

素因数の和:2188

約数の個数: 20

約数和(自身を含む): 108096192

約数和(自身を除く): 20625361

約数列:

[1, 7, 17, 49, 119, 343, 833, 2143, 2401, 5831, 15001, 36431, 40817, 105007, 255017, 735049, 1785119, 5145343, 12495833, 87470831]

約数ペア:

[(1, 87470831), (7, 12495833), (17, 5145343), (49, 1785119), (119, 735049), (343, 255017), (833, 105007), (2143, 40817), (2401, 36431), (5831, 15001)]