21357039

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12211}}^1$

素因数の和:12278

約数の個数: 16

約数和(自身を含む): 31653504

約数和(自身を除く): 10296465

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12211, 36633, 134321, 402963, 647183, 1941549, 7119013, 21357039]

約数ペア:

[(1, 21357039), (3, 7119013), (11, 1941549), (33, 647183), (53, 402963), (159, 134321), (583, 36633), (1749, 12211)]