21247677

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{7949}}^1$

素因数の和:7975

約数の個数: 24

約数和(自身を含む): 34725600

約数和(自身を除く): 13477923

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 891, 2673, 7949, 23847, 71541, 87439, 214623, 262317, 643869, 786951, 1931607, 2360853, 7082559, 21247677]

約数ペア:

[(1, 21247677), (3, 7082559), (9, 2360853), (11, 1931607), (27, 786951), (33, 643869), (81, 262317), (99, 214623), (243, 87439), (297, 71541), (891, 23847), (2673, 7949)]