21036417

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1\times {\mathrm{521}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 28847808

約数和(自身を除く): 7811391

約数列:

[1, 3, 43, 129, 313, 521, 939, 1563, 13459, 22403, 40377, 67209, 163073, 489219, 7012139, 21036417]

約数ペア:

[(1, 21036417), (3, 7012139), (43, 489219), (129, 163073), (313, 67209), (521, 40377), (939, 22403), (1563, 13459)]