19777563

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13003}}^1$

素因数の和:13035

約数の個数: 18

約数和(自身を含む): 30936516

約数和(自身を除く): 11158953

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13003, 39009, 117027, 169039, 507117, 1521351, 2197507, 6592521, 19777563]

約数ペア:

[(1, 19777563), (3, 6592521), (9, 2197507), (13, 1521351), (39, 507117), (117, 169039), (169, 117027), (507, 39009), (1521, 13003)]