20790441

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{997}}^1$

素因数の和:1341

約数の個数: 24

約数和(自身を含む): 34458944

約数和(自身を除く): 13668503

約数列:

[1, 3, 7, 9, 21, 63, 331, 993, 997, 2317, 2979, 2991, 6951, 6979, 8973, 20853, 20937, 62811, 330007, 990021, 2310049, 2970063, 6930147, 20790441]

約数ペア:

[(1, 20790441), (3, 6930147), (7, 2970063), (9, 2310049), (21, 990021), (63, 330007), (331, 62811), (993, 20937), (997, 20853), (2317, 8973), (2979, 6979), (2991, 6951)]