20064620

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2579}}^1$

素因数の和:2977

約数の個数: 24

約数和(自身を含む): 42260400

約数和(自身を除く): 22195780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2579, 3890, 5158, 7780, 10316, 12895, 25790, 51580, 1003231, 2006462, 4012924, 5016155, 10032310, 20064620]

約数ペア:

[(1, 20064620), (2, 10032310), (4, 5016155), (5, 4012924), (10, 2006462), (20, 1003231), (389, 51580), (778, 25790), (1556, 12895), (1945, 10316), (2579, 7780), (3890, 5158)]