21119985

素因数分解:

$3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2593}}^1$

素因数の和:2785

約数の個数: 24

約数和(自身を含む): 36824424

約数和(自身を除く): 15704439

約数列:

[1, 3, 5, 9, 15, 45, 181, 543, 905, 1629, 2593, 2715, 7779, 8145, 12965, 23337, 38895, 116685, 469333, 1407999, 2346665, 4223997, 7039995, 21119985]

約数ペア:

[(1, 21119985), (3, 7039995), (5, 4223997), (9, 2346665), (15, 1407999), (45, 469333), (181, 116685), (543, 38895), (905, 23337), (1629, 12965), (2593, 8145), (2715, 7779)]