20852217

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8017}}^1$

素因数の和:8057

約数の個数: 18

約数和(自身を含む): 31999838

約数和(自身を除く): 11147621

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8017, 24051, 72153, 136289, 408867, 1226601, 2316913, 6950739, 20852217]

約数ペア:

[(1, 20852217), (3, 6950739), (9, 2316913), (17, 1226601), (51, 408867), (153, 136289), (289, 72153), (867, 24051), (2601, 8017)]