21478215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130171}}^1$

素因数の和:130190

約数の個数: 16

約数和(自身を含む): 37489536

約数和(自身を除く): 16011321

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 130171, 390513, 650855, 1431881, 1952565, 4295643, 7159405, 21478215]

約数ペア:

[(1, 21478215), (3, 7159405), (5, 4295643), (11, 1952565), (15, 1431881), (33, 650855), (55, 390513), (165, 130171)]