79730721

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{20747}}^1$

素因数の和:20821

約数の個数: 24

約数和(自身を含む): 133783104

約数和(自身を除く): 54052383

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 20747, 62241, 145229, 186723, 435687, 1265567, 1307061, 3796701, 8858969, 11390103, 26576907, 79730721]

約数ペア:

[(1, 79730721), (3, 26576907), (7, 11390103), (9, 8858969), (21, 3796701), (61, 1307061), (63, 1265567), (183, 435687), (427, 186723), (549, 145229), (1281, 62241), (3843, 20747)]