21249999

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1801}}^1$

素因数の和:1852

約数の個数: 32

約数和(自身を含む): 34598400

約数和(自身を除く): 13348401

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 171, 207, 437, 513, 621, 1311, 1801, 3933, 5403, 11799, 16209, 34219, 41423, 48627, 102657, 124269, 307971, 372807, 787037, 923913, 1118421, 2361111, 7083333, 21249999]

約数ペア:

[(1, 21249999), (3, 7083333), (9, 2361111), (19, 1118421), (23, 923913), (27, 787037), (57, 372807), (69, 307971), (171, 124269), (207, 102657), (437, 48627), (513, 41423), (621, 34219), (1311, 16209), (1801, 11799), (3933, 5403)]