21763971

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{3019}}^1$

素因数の和:3120

約数の個数: 20

約数和(自身を含む): 32887800

約数和(自身を除く): 11123829

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 3019, 7209, 9057, 27171, 81513, 244539, 268691, 806073, 2418219, 7254657, 21763971]

約数ペア:

[(1, 21763971), (3, 7254657), (9, 2418219), (27, 806073), (81, 268691), (89, 244539), (267, 81513), (801, 27171), (2403, 9057), (3019, 7209)]