16860987

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 29643040

約数和(自身を除く): 12782053

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 99, 117, 121, 143, 297, 351, 363, 397, 429, 1089, 1191, 1287, 1573, 3267, 3573, 3861, 4367, 4719, 5161, 10719, 13101, 14157, 15483, 39303, 42471, 46449, 48037, 56771, 117909, 139347, 144111, 170313, 432333, 510939, 624481, 1296999, 1532817, 1873443, 5620329, 16860987]

約数ペア:

[(1, 16860987), (3, 5620329), (9, 1873443), (11, 1532817), (13, 1296999), (27, 624481), (33, 510939), (39, 432333), (99, 170313), (117, 144111), (121, 139347), (143, 117909), (297, 56771), (351, 48037), (363, 46449), (397, 42471), (429, 39303), (1089, 15483), (1191, 14157), (1287, 13101), (1573, 10719), (3267, 5161), (3573, 4719), (3861, 4367)]