21742587

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6547}}^1$

素因数の和:6600

約数の個数: 20

約数和(自身を含む): 33276936

約数和(自身を除く): 11534349

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6547, 19641, 58923, 176769, 268427, 530307, 805281, 2415843, 7247529, 21742587]

約数ペア:

[(1, 21742587), (3, 7247529), (9, 2415843), (27, 805281), (41, 530307), (81, 268427), (123, 176769), (369, 58923), (1107, 19641), (3321, 6547)]