21891507

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{1439}}^1$

素因数の和:1914

約数の個数: 16

約数和(自身を含む): 31933440

約数和(自身を除く): 10041933

約数列:

[1, 3, 11, 33, 461, 1383, 1439, 4317, 5071, 15213, 15829, 47487, 663379, 1990137, 7297169, 21891507]

約数ペア:

[(1, 21891507), (3, 7297169), (11, 1990137), (33, 663379), (461, 47487), (1383, 15829), (1439, 15213), (4317, 5071)]