21609921

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1\times {\mathrm{449}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 29462400

約数和(自身を除く): 7852479

約数列:

[1, 3, 61, 183, 263, 449, 789, 1347, 16043, 27389, 48129, 82167, 118087, 354261, 7203307, 21609921]

約数ペア:

[(1, 21609921), (3, 7203307), (61, 354261), (183, 118087), (263, 82167), (449, 48129), (789, 27389), (1347, 16043)]