21222955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4133}}^1$

素因数の和:4230

約数の個数: 16

約数和(自身を含む): 27780480

約数和(自身を除く): 6557525

約数列:

[1, 5, 13, 65, 79, 395, 1027, 4133, 5135, 20665, 53729, 268645, 326507, 1632535, 4244591, 21222955]

約数ペア:

[(1, 21222955), (5, 4244591), (13, 1632535), (65, 326507), (79, 268645), (395, 53729), (1027, 20665), (4133, 5135)]