17880993

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{16981}}^1$

素因数の和:17006

約数の個数: 20

約数和(自身を含む): 28767508

約数和(自身を除く): 10886515

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 16981, 50943, 152829, 220753, 458487, 662259, 1375461, 1986777, 5960331, 17880993]

約数ペア:

[(1, 17880993), (3, 5960331), (9, 1986777), (13, 1375461), (27, 662259), (39, 458487), (81, 220753), (117, 152829), (351, 50943), (1053, 16981)]