19990503

素因数分解:

$3^3\times {\mathrm{13}}^3\times {\mathrm{337}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 32177600

約数和(自身を除く): 12187097

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 337, 351, 507, 1011, 1521, 2197, 3033, 4381, 4563, 6591, 9099, 13143, 19773, 39429, 56953, 59319, 118287, 170859, 512577, 740389, 1537731, 2221167, 6663501, 19990503]

約数ペア:

[(1, 19990503), (3, 6663501), (9, 2221167), (13, 1537731), (27, 740389), (39, 512577), (117, 170859), (169, 118287), (337, 59319), (351, 56953), (507, 39429), (1011, 19773), (1521, 13143), (2197, 9099), (3033, 6591), (4381, 4563)]