21291654

素因数分解:

$2^1\times 3^1\times {\mathrm{421}}^1\times {\mathrm{8429}}^1$

素因数の和:8855

約数の個数: 16

約数和(自身を含む): 42689520

約数和(自身を除く): 21397866

約数列:

[1, 2, 3, 6, 421, 842, 1263, 2526, 8429, 16858, 25287, 50574, 3548609, 7097218, 10645827, 21291654]

約数ペア:

[(1, 21291654), (2, 10645827), (3, 7097218), (6, 3548609), (421, 50574), (842, 25287), (1263, 16858), (2526, 8429)]