820771917

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 1368981504

約数和(自身を除く): 548209587

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 127, 129, 301, 357, 381, 421, 731, 889, 903, 1263, 2159, 2193, 2667, 2947, 5117, 5461, 6477, 7157, 8841, 15113, 15351, 16383, 18103, 21471, 38227, 45339, 50099, 53467, 54309, 92837, 114681, 126721, 150297, 160401, 278511, 307751, 374269, 380163, 649859, 908939, 923253, 1122807, 1949577, 2154257, 2299081, 2726817, 6362573, 6462771, 6897243, 16093567, 19087719, 39084377, 48280701, 117253131, 273590639, 820771917]

約数ペア:

[(1, 820771917), (3, 273590639), (7, 117253131), (17, 48280701), (21, 39084377), (43, 19087719), (51, 16093567), (119, 6897243), (127, 6462771), (129, 6362573), (301, 2726817), (357, 2299081), (381, 2154257), (421, 1949577), (731, 1122807), (889, 923253), (903, 908939), (1263, 649859), (2159, 380163), (2193, 374269), (2667, 307751), (2947, 278511), (5117, 160401), (5461, 150297), (6477, 126721), (7157, 114681), (8841, 92837), (15113, 54309), (15351, 53467), (16383, 50099), (18103, 45339), (21471, 38227)]