20778860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14633}}^1$

素因数の和:14713

約数の個数: 24

約数和(自身を含む): 44253216

約数和(自身を除く): 23474356

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14633, 29266, 58532, 73165, 146330, 292660, 1038943, 2077886, 4155772, 5194715, 10389430, 20778860]

約数ペア:

[(1, 20778860), (2, 10389430), (4, 5194715), (5, 4155772), (10, 2077886), (20, 1038943), (71, 292660), (142, 146330), (284, 73165), (355, 58532), (710, 29266), (1420, 14633)]