219804080

素因数分解:

$2^4\times 5^1\times {\mathrm{2747551}}^1$

素因数の和:2747564

約数の個数: 20

約数和(自身を含む): 511044672

約数和(自身を除く): 291240592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2747551, 5495102, 10990204, 13737755, 21980408, 27475510, 43960816, 54951020, 109902040, 219804080]

約数ペア:

[(1, 219804080), (2, 109902040), (4, 54951020), (5, 43960816), (8, 27475510), (10, 21980408), (16, 13737755), (20, 10990204), (40, 5495102), (80, 2747551)]