12051221

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 15249024

約数和(自身を除く): 3197803

約数列:

[1, 7, 13, 61, 91, 167, 169, 427, 793, 1169, 1183, 2171, 5551, 10187, 10309, 15197, 28223, 71309, 72163, 132431, 197561, 927017, 1721603, 12051221]

約数ペア:

[(1, 12051221), (7, 1721603), (13, 927017), (61, 197561), (91, 132431), (167, 72163), (169, 71309), (427, 28223), (793, 15197), (1169, 10309), (1183, 10187), (2171, 5551)]