21508729

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1229}}^1$

素因数の和:1320

約数の個数: 16

約数和(自身を含む): 24678720

約数和(自身を除く): 3169991

約数列:

[1, 11, 37, 43, 407, 473, 1229, 1591, 13519, 17501, 45473, 52847, 500203, 581317, 1955339, 21508729]

約数ペア:

[(1, 21508729), (11, 1955339), (37, 581317), (43, 500203), (407, 52847), (473, 45473), (1229, 17501), (1591, 13519)]