21211686

素因数分解:

$2^1\times 3^3\times {\mathrm{392809}}^1$

素因数の和:392820

約数の個数: 16

約数和(自身を含む): 47137200

約数和(自身を除く): 25925514

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392809, 785618, 1178427, 2356854, 3535281, 7070562, 10605843, 21211686]

約数ペア:

[(1, 21211686), (2, 10605843), (3, 7070562), (6, 3535281), (9, 2356854), (18, 1178427), (27, 785618), (54, 392809)]