21291687

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{21313}}^1$

素因数の和:21359

約数の個数: 16

約数和(自身を含む): 32397280

約数和(自身を除く): 11105593

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 21313, 63939, 191817, 575451, 788581, 2365743, 7097229, 21291687]

約数ペア:

[(1, 21291687), (3, 7097229), (9, 2365743), (27, 788581), (37, 575451), (111, 191817), (333, 63939), (999, 21313)]