21447531

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3067}}^1$

素因数の和:3120

約数の個数: 32

約数和(自身を含む): 37306880

約数和(自身を除く): 15859349

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 3067, 6993, 9201, 21469, 27603, 64407, 82809, 113479, 193221, 340437, 579663, 794353, 1021311, 2383059, 3063933, 7149177, 21447531]

約数ペア:

[(1, 21447531), (3, 7149177), (7, 3063933), (9, 2383059), (21, 1021311), (27, 794353), (37, 579663), (63, 340437), (111, 193221), (189, 113479), (259, 82809), (333, 64407), (777, 27603), (999, 21469), (2331, 9201), (3067, 6993)]