21986173640

素因数分解:

$2^3\times 5^1\times {\mathrm{25943}}^1\times {\mathrm{21187}}^1$

素因数の和:47141

約数の個数: 32

約数和(自身を含む): 49473132480

約数和(自身を除く): 27486958840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21187, 25943, 42374, 51886, 84748, 103772, 105935, 129715, 169496, 207544, 211870, 259430, 423740, 518860, 847480, 1037720, 549654341, 1099308682, 2198617364, 2748271705, 4397234728, 5496543410, 10993086820, 21986173640]

約数ペア:

[(1, 21986173640), (2, 10993086820), (4, 5496543410), (5, 4397234728), (8, 2748271705), (10, 2198617364), (20, 1099308682), (40, 549654341), (21187, 1037720), (25943, 847480), (42374, 518860), (51886, 423740), (84748, 259430), (103772, 211870), (105935, 207544), (129715, 169496)]