20407760

素因数分解:

$2^4\times 5^1\times {\mathrm{255097}}^1$

素因数の和:255110

約数の個数: 20

約数和(自身を含む): 47448228

約数和(自身を除く): 27040468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255097, 510194, 1020388, 1275485, 2040776, 2550970, 4081552, 5101940, 10203880, 20407760]

約数ペア:

[(1, 20407760), (2, 10203880), (4, 5101940), (5, 4081552), (8, 2550970), (10, 2040776), (16, 1275485), (20, 1020388), (40, 510194), (80, 255097)]