21268221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{619}}^1\times {\mathrm{881}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 30623040

約数和(自身を除く): 9354819

約数列:

[1, 3, 13, 39, 619, 881, 1857, 2643, 8047, 11453, 24141, 34359, 545339, 1636017, 7089407, 21268221]

約数ペア:

[(1, 21268221), (3, 7089407), (13, 1636017), (39, 545339), (619, 34359), (881, 24141), (1857, 11453), (2643, 8047)]