21121545

素因数分解:

$3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5479}}^1$

素因数の和:5744

約数の個数: 16

約数和(自身を含む): 33932160

約数和(自身を除く): 12810615

約数列:

[1, 3, 5, 15, 257, 771, 1285, 3855, 5479, 16437, 27395, 82185, 1408103, 4224309, 7040515, 21121545]

約数ペア:

[(1, 21121545), (3, 7040515), (5, 4224309), (15, 1408103), (257, 82185), (771, 27395), (1285, 16437), (3855, 5479)]