21485493

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 33767712

約数和(自身を除く): 12282219

約数列:

[1, 3, 9, 27, 37, 67, 81, 107, 111, 201, 321, 333, 603, 963, 999, 1809, 2479, 2889, 2997, 3959, 5427, 7169, 7437, 8667, 11877, 21507, 22311, 35631, 64521, 66933, 106893, 193563, 200799, 265253, 320679, 580689, 795759, 2387277, 7161831, 21485493]

約数ペア:

[(1, 21485493), (3, 7161831), (9, 2387277), (27, 795759), (37, 580689), (67, 320679), (81, 265253), (107, 200799), (111, 193563), (201, 106893), (321, 66933), (333, 64521), (603, 35631), (963, 22311), (999, 21507), (1809, 11877), (2479, 8667), (2889, 7437), (2997, 7169), (3959, 5427)]