21619791

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2999}}^1$

素因数の和:3100

約数の個数: 20

約数和(自身を含む): 32670000

約数和(自身を除く): 11050209

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2999, 7209, 8997, 26991, 80973, 242919, 266911, 800733, 2402199, 7206597, 21619791]

約数ペア:

[(1, 21619791), (3, 7206597), (9, 2402199), (27, 800733), (81, 266911), (89, 242919), (267, 80973), (801, 26991), (2403, 8997), (2999, 7209)]