21642471

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11617}}^1$

素因数の和:11652

約数の個数: 20

約数和(自身を含む): 33738672

約数和(自身を除く): 12096201

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11617, 34851, 104553, 267191, 313659, 801573, 940977, 2404719, 7214157, 21642471]

約数ペア:

[(1, 21642471), (3, 7214157), (9, 2404719), (23, 940977), (27, 801573), (69, 313659), (81, 267191), (207, 104553), (621, 34851), (1863, 11617)]