20856399

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4049}}^1$

素因数の和:4170

約数の個数: 16

約数和(自身を含む): 29743200

約数和(自身を除く): 8886801

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4049, 5151, 12147, 68833, 206499, 408949, 1226847, 6952133, 20856399]

約数ペア:

[(1, 20856399), (3, 6952133), (17, 1226847), (51, 408949), (101, 206499), (303, 68833), (1717, 12147), (4049, 5151)]