21781197

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{21803}}^1$

素因数の和:21849

約数の個数: 16

約数和(自身を含む): 33142080

約数和(自身を除く): 11360883

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 21803, 65409, 196227, 588681, 806711, 2420133, 7260399, 21781197]

約数ペア:

[(1, 21781197), (3, 7260399), (9, 2420133), (27, 806711), (37, 588681), (111, 196227), (333, 65409), (999, 21803)]