80212120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{117959}}^1$

素因数の和:117987

約数の個数: 32

約数和(自身を含む): 191095200

約数和(自身を除く): 110883080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 117959, 235918, 471836, 589795, 943672, 1179590, 2005303, 2359180, 4010606, 4718360, 8021212, 10026515, 16042424, 20053030, 40106060, 80212120]

約数ペア:

[(1, 80212120), (2, 40106060), (4, 20053030), (5, 16042424), (8, 10026515), (10, 8021212), (17, 4718360), (20, 4010606), (34, 2359180), (40, 2005303), (68, 1179590), (85, 943672), (136, 589795), (170, 471836), (340, 235918), (680, 117959)]