21202881

素因数分解:

$3^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{4409}}^1$

素因数の和:4648

約数の個数: 16

約数和(自身を含む): 32457600

約数和(自身を除く): 11254719

約数列:

[1, 3, 7, 21, 229, 687, 1603, 4409, 4809, 13227, 30863, 92589, 1009661, 3028983, 7067627, 21202881]

約数ペア:

[(1, 21202881), (3, 7067627), (7, 3028983), (21, 1009661), (229, 92589), (687, 30863), (1603, 13227), (4409, 4809)]