18977478

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{243301}}^1$

素因数の和:243319

約数の個数: 16

約数和(自身を含む): 40874736

約数和(自身を除く): 21897258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 243301, 486602, 729903, 1459806, 3162913, 6325826, 9488739, 18977478]

約数ペア:

[(1, 18977478), (2, 9488739), (3, 6325826), (6, 3162913), (13, 1459806), (26, 729903), (39, 486602), (78, 243301)]