21491703

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{13049}}^1$

素因数の和:13119

約数の個数: 16

約数和(自身を含む): 32364000

約数和(自身を除く): 10872297

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 13049, 39147, 117441, 352323, 795989, 2387967, 7163901, 21491703]

約数ペア:

[(1, 21491703), (3, 7163901), (9, 2387967), (27, 795989), (61, 352323), (183, 117441), (549, 39147), (1647, 13049)]