21152001

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12613}}^1$

素因数の和:12672

約数の個数: 16

約数和(自身を含む): 31080896

約数和(自身を除く): 9928895

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12613, 37839, 163969, 491907, 542359, 1627077, 7050667, 21152001]

約数ペア:

[(1, 21152001), (3, 7050667), (13, 1627077), (39, 542359), (43, 491907), (129, 163969), (559, 37839), (1677, 12613)]