80213240

素因数分解:

$2^3\times 5^1\times {\mathrm{2005331}}^1$

素因数の和:2005342

約数の個数: 16

約数和(自身を含む): 180479880

約数和(自身を除く): 100266640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2005331, 4010662, 8021324, 10026655, 16042648, 20053310, 40106620, 80213240]

約数ペア:

[(1, 80213240), (2, 40106620), (4, 20053310), (5, 16042648), (8, 10026655), (10, 8021324), (20, 4010662), (40, 2005331)]