66808144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{321193}}^1$

素因数の和:321214

約数の個数: 20

約数和(自身を含む): 139398196

約数和(自身を除く): 72590052

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 321193, 642386, 1284772, 2569544, 4175509, 5139088, 8351018, 16702036, 33404072, 66808144]

約数ペア:

[(1, 66808144), (2, 33404072), (4, 16702036), (8, 8351018), (13, 5139088), (16, 4175509), (26, 2569544), (52, 1284772), (104, 642386), (208, 321193)]