21320098

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{1447}}^1$

素因数の和:1641

約数の個数: 16

約数和(自身を含む): 32840640

約数和(自身を除く): 11520542

約数列:

[1, 2, 53, 106, 139, 278, 1447, 2894, 7367, 14734, 76691, 153382, 201133, 402266, 10660049, 21320098]

約数ペア:

[(1, 21320098), (2, 10660049), (53, 402266), (106, 201133), (139, 153382), (278, 76691), (1447, 14734), (2894, 7367)]