21588237

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 37440000

約数和(自身を除く): 15851763

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 437, 499, 627, 759, 1311, 1497, 1881, 2277, 3933, 4491, 4807, 5489, 9481, 11477, 14421, 16467, 28443, 34431, 43263, 49401, 85329, 103293, 104291, 126247, 218063, 312873, 378741, 654189, 938619, 1136223, 1962567, 2398693, 7196079, 21588237]

約数ペア:

[(1, 21588237), (3, 7196079), (9, 2398693), (11, 1962567), (19, 1136223), (23, 938619), (33, 654189), (57, 378741), (69, 312873), (99, 218063), (171, 126247), (207, 104291), (209, 103293), (253, 85329), (437, 49401), (499, 43263), (627, 34431), (759, 28443), (1311, 16467), (1497, 14421), (1881, 11477), (2277, 9481), (3933, 5489), (4491, 4807)]