21216621

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1\times {\mathrm{347}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 28814400

約数和(自身を除く): 7597779

約数列:

[1, 3, 89, 229, 267, 347, 687, 1041, 20381, 30883, 61143, 79463, 92649, 238389, 7072207, 21216621]

約数ペア:

[(1, 21216621), (3, 7072207), (89, 238389), (229, 92649), (267, 79463), (347, 61143), (687, 30883), (1041, 20381)]