20838531

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 33251328

約数和(自身を除く): 12412797

約数列:

[1, 3, 7, 21, 43, 47, 129, 141, 301, 329, 491, 903, 987, 1473, 2021, 3437, 6063, 10311, 14147, 21113, 23077, 42441, 63339, 69231, 147791, 161539, 443373, 484617, 992311, 2976933, 6946177, 20838531]

約数ペア:

[(1, 20838531), (3, 6946177), (7, 2976933), (21, 992311), (43, 484617), (47, 443373), (129, 161539), (141, 147791), (301, 69231), (329, 63339), (491, 42441), (903, 23077), (987, 21113), (1473, 14147), (2021, 10311), (3437, 6063)]