20940507

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5449}}^1$

素因数の和:5523

約数の個数: 24

約数和(自身を含む): 35141600

約数和(自身を除く): 14201093

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5449, 16347, 38143, 49041, 114429, 332389, 343287, 997167, 2326723, 2991501, 6980169, 20940507]

約数ペア:

[(1, 20940507), (3, 6980169), (7, 2991501), (9, 2326723), (21, 997167), (61, 343287), (63, 332389), (183, 114429), (427, 49041), (549, 38143), (1281, 16347), (3843, 5449)]