21890121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{11243}}^1$

素因数の和:11316

約数の個数: 16

約数和(自身を含む): 32382720

約数和(自身を除く): 10492599

約数列:

[1, 3, 11, 33, 59, 177, 649, 1947, 11243, 33729, 123673, 371019, 663337, 1990011, 7296707, 21890121]

約数ペア:

[(1, 21890121), (3, 7296707), (11, 1990011), (33, 663337), (59, 371019), (177, 123673), (649, 33729), (1947, 11243)]