18678843

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:313

約数の個数: 40

約数和(自身を含む): 30056400

約数和(自身を除く): 11377557

約数列:

[1, 3, 9, 19, 27, 53, 57, 81, 159, 171, 229, 477, 513, 687, 1007, 1431, 1539, 2061, 3021, 4293, 4351, 6183, 9063, 12137, 13053, 18549, 27189, 36411, 39159, 81567, 109233, 117477, 230603, 327699, 352431, 691809, 983097, 2075427, 6226281, 18678843]

約数ペア:

[(1, 18678843), (3, 6226281), (9, 2075427), (19, 983097), (27, 691809), (53, 352431), (57, 327699), (81, 230603), (159, 117477), (171, 109233), (229, 81567), (477, 39159), (513, 36411), (687, 27189), (1007, 18549), (1431, 13053), (1539, 12137), (2061, 9063), (3021, 6183), (4293, 4351)]