21670497

素因数分解:

$3^5\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 32681376

約数和(自身を除く): 11010879

約数列:

[1, 3, 9, 27, 81, 243, 257, 347, 771, 1041, 2313, 3123, 6939, 9369, 20817, 28107, 62451, 84321, 89179, 267537, 802611, 2407833, 7223499, 21670497]

約数ペア:

[(1, 21670497), (3, 7223499), (9, 2407833), (27, 802611), (81, 267537), (243, 89179), (257, 84321), (347, 62451), (771, 28107), (1041, 20817), (2313, 9369), (3123, 6939)]