16921611

素因数分解:

$3^2\times 7^2\times {\mathrm{38371}}^1$

素因数の和:38391

約数の個数: 18

約数和(自身を含む): 28433652

約数和(自身を除く): 11512041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 38371, 115113, 268597, 345339, 805791, 1880179, 2417373, 5640537, 16921611]

約数ペア:

[(1, 16921611), (3, 5640537), (7, 2417373), (9, 1880179), (21, 805791), (49, 345339), (63, 268597), (147, 115113), (441, 38371)]