20138904580

素因数分解:

$2^2\times 5^1\times {\mathrm{1481}}^1\times {\mathrm{679909}}^1$

素因数の和:681399

約数の個数: 24

約数和(自身を含む): 42320318040

約数和(自身を除く): 22181413460

約数列:

[1, 2, 4, 5, 10, 20, 1481, 2962, 5924, 7405, 14810, 29620, 679909, 1359818, 2719636, 3399545, 6799090, 13598180, 1006945229, 2013890458, 4027780916, 5034726145, 10069452290, 20138904580]

約数ペア:

[(1, 20138904580), (2, 10069452290), (4, 5034726145), (5, 4027780916), (10, 2013890458), (20, 1006945229), (1481, 13598180), (2962, 6799090), (5924, 3399545), (7405, 2719636), (14810, 1359818), (29620, 679909)]