21739878

素因数分解:

$2^1\times 3^2\times {\mathrm{139}}^1\times {\mathrm{8689}}^1$

素因数の和:8836

約数の個数: 24

約数和(自身を含む): 47447400

約数和(自身を除く): 25707522

約数列:

[1, 2, 3, 6, 9, 18, 139, 278, 417, 834, 1251, 2502, 8689, 17378, 26067, 52134, 78201, 156402, 1207771, 2415542, 3623313, 7246626, 10869939, 21739878]

約数ペア:

[(1, 21739878), (2, 10869939), (3, 7246626), (6, 3623313), (9, 2415542), (18, 1207771), (139, 156402), (278, 78201), (417, 52134), (834, 26067), (1251, 17378), (2502, 8689)]