21738861

素因数分解:

$3^4\times {\mathrm{349}}^1\times {\mathrm{769}}^1$

素因数の和:1130

約数の個数: 20

約数和(自身を含む): 32609500

約数和(自身を除く): 10870639

約数列:

[1, 3, 9, 27, 81, 349, 769, 1047, 2307, 3141, 6921, 9423, 20763, 28269, 62289, 268381, 805143, 2415429, 7246287, 21738861]

約数ペア:

[(1, 21738861), (3, 7246287), (9, 2415429), (27, 805143), (81, 268381), (349, 62289), (769, 28269), (1047, 20763), (2307, 9423), (3141, 6921)]