20498517

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13477}}^1$

素因数の和:13509

約数の個数: 18

約数和(自身を含む): 32064162

約数和(自身を除く): 11565645

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13477, 40431, 121293, 175201, 525603, 1576809, 2277613, 6832839, 20498517]

約数ペア:

[(1, 20498517), (3, 6832839), (9, 2277613), (13, 1576809), (39, 525603), (117, 175201), (169, 121293), (507, 40431), (1521, 13477)]