21366009

素因数分解:

$3^2\times 7^2\times {\mathrm{48449}}^1$

素因数の和:48469

約数の個数: 18

約数和(自身を含む): 35901450

約数和(自身を除く): 14535441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 48449, 145347, 339143, 436041, 1017429, 2374001, 3052287, 7122003, 21366009]

約数ペア:

[(1, 21366009), (3, 7122003), (7, 3052287), (9, 2374001), (21, 1017429), (49, 436041), (63, 339143), (147, 145347), (441, 48449)]