81159020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{238703}}^1$

素因数の和:238729

約数の個数: 24

約数和(自身を含む): 180460224

約数和(自身を除く): 99301204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 238703, 477406, 954812, 1193515, 2387030, 4057951, 4774060, 8115902, 16231804, 20289755, 40579510, 81159020]

約数ペア:

[(1, 81159020), (2, 40579510), (4, 20289755), (5, 16231804), (10, 8115902), (17, 4774060), (20, 4057951), (34, 2387030), (68, 1193515), (85, 954812), (170, 477406), (340, 238703)]