21455049

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{709}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 35988480

約数和(自身を除く): 14533431

約数列:

[1, 3, 7, 11, 21, 33, 77, 131, 231, 393, 709, 917, 1441, 2127, 2751, 4323, 4963, 7799, 10087, 14889, 23397, 30261, 54593, 92879, 163779, 278637, 650153, 1021669, 1950459, 3065007, 7151683, 21455049]

約数ペア:

[(1, 21455049), (3, 7151683), (7, 3065007), (11, 1950459), (21, 1021669), (33, 650153), (77, 278637), (131, 163779), (231, 92879), (393, 54593), (709, 30261), (917, 23397), (1441, 14889), (2127, 10087), (2751, 7799), (4323, 4963)]