218366020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{642253}}^1$

素因数の和:642279

約数の個数: 24

約数和(自身を含む): 485544024

約数和(自身を除く): 267178004

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 642253, 1284506, 2569012, 3211265, 6422530, 10918301, 12845060, 21836602, 43673204, 54591505, 109183010, 218366020]

約数ペア:

[(1, 218366020), (2, 109183010), (4, 54591505), (5, 43673204), (10, 21836602), (17, 12845060), (20, 10918301), (34, 6422530), (68, 3211265), (85, 2569012), (170, 1284506), (340, 642253)]