21720432891

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4216741}}^1$

素因数の和:4216862

約数の個数: 16

約数和(自身を含む): 30967753248

約数和(自身を除く): 9247320357

約数列:

[1, 3, 17, 51, 101, 303, 1717, 5151, 4216741, 12650223, 71684597, 215053791, 425890841, 1277672523, 7240144297, 21720432891]

約数ペア:

[(1, 21720432891), (3, 7240144297), (17, 1277672523), (51, 425890841), (101, 215053791), (303, 71684597), (1717, 12650223), (5151, 4216741)]