19813833

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 13382967

約数列:

[1, 3, 9, 13, 23, 37, 39, 69, 111, 117, 199, 207, 299, 333, 481, 597, 851, 897, 1443, 1791, 2553, 2587, 2691, 4329, 4577, 7363, 7659, 7761, 11063, 13731, 22089, 23283, 33189, 41193, 59501, 66267, 95719, 99567, 169349, 178503, 287157, 508047, 535509, 861471, 1524141, 2201537, 6604611, 19813833]

約数ペア:

[(1, 19813833), (3, 6604611), (9, 2201537), (13, 1524141), (23, 861471), (37, 535509), (39, 508047), (69, 287157), (111, 178503), (117, 169349), (199, 99567), (207, 95719), (299, 66267), (333, 59501), (481, 41193), (597, 33189), (851, 23283), (897, 22089), (1443, 13731), (1791, 11063), (2553, 7761), (2587, 7659), (2691, 7363), (4329, 4577)]