20512540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60331}}^1$

素因数の和:60357

約数の個数: 24

約数和(自身を含む): 45610992

約数和(自身を除く): 25098452

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60331, 120662, 241324, 301655, 603310, 1025627, 1206620, 2051254, 4102508, 5128135, 10256270, 20512540]

約数ペア:

[(1, 20512540), (2, 10256270), (4, 5128135), (5, 4102508), (10, 2051254), (17, 1206620), (20, 1025627), (34, 603310), (68, 301655), (85, 241324), (170, 120662), (340, 60331)]