21302487

素因数分解:

$3^3\times {\mathrm{31}}^2\times {\mathrm{821}}^1$

素因数の和:892

約数の個数: 24

約数和(自身を含む): 32649840

約数和(自身を除く): 11347353

約数列:

[1, 3, 9, 27, 31, 93, 279, 821, 837, 961, 2463, 2883, 7389, 8649, 22167, 25451, 25947, 76353, 229059, 687177, 788981, 2366943, 7100829, 21302487]

約数ペア:

[(1, 21302487), (3, 7100829), (9, 2366943), (27, 788981), (31, 687177), (93, 229059), (279, 76353), (821, 25947), (837, 25451), (961, 22167), (2463, 8649), (2883, 7389)]