19239519

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 28940800

約数和(自身を除く): 9701281

約数列:

[1, 3, 13, 37, 39, 67, 111, 199, 201, 481, 597, 871, 1443, 2479, 2587, 2613, 7363, 7437, 7761, 13333, 22089, 32227, 39999, 95719, 96681, 173329, 287157, 493321, 519987, 1479963, 6413173, 19239519]

約数ペア:

[(1, 19239519), (3, 6413173), (13, 1479963), (37, 519987), (39, 493321), (67, 287157), (111, 173329), (199, 96681), (201, 95719), (481, 39999), (597, 32227), (871, 22089), (1443, 13333), (2479, 7761), (2587, 7437), (2613, 7363)]