20161856883

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1281827}}^1$

素因数の和:1281951

約数の個数: 24

約数和(自身を含む): 31563732672

約数和(自身を除く): 11401875789

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 749, 2247, 5243, 15729, 1281827, 3845481, 8972789, 26918367, 62809523, 137155489, 188428569, 411466467, 960088423, 2880265269, 6720618961, 20161856883]

約数ペア:

[(1, 20161856883), (3, 6720618961), (7, 2880265269), (21, 960088423), (49, 411466467), (107, 188428569), (147, 137155489), (321, 62809523), (749, 26918367), (2247, 8972789), (5243, 3845481), (15729, 1281827)]