20768319

素因数分解:

$3^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:210

約数の個数: 60

約数和(自身を含む): 36949528

約数和(自身を除く): 16181209

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 121, 143, 163, 297, 351, 363, 429, 489, 891, 1053, 1089, 1287, 1467, 1573, 1793, 2119, 3267, 3861, 4401, 4719, 5379, 6357, 9801, 11583, 13203, 14157, 16137, 19071, 19723, 23309, 42471, 48411, 57213, 59169, 69927, 127413, 145233, 171639, 177507, 209781, 256399, 532521, 629343, 769197, 1597563, 1888029, 2307591, 6922773, 20768319]

約数ペア:

[(1, 20768319), (3, 6922773), (9, 2307591), (11, 1888029), (13, 1597563), (27, 769197), (33, 629343), (39, 532521), (81, 256399), (99, 209781), (117, 177507), (121, 171639), (143, 145233), (163, 127413), (297, 69927), (351, 59169), (363, 57213), (429, 48411), (489, 42471), (891, 23309), (1053, 19723), (1089, 19071), (1287, 16137), (1467, 14157), (1573, 13203), (1793, 11583), (2119, 9801), (3267, 6357), (3861, 5379), (4401, 4719)]