20513493

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:77

約数の個数: 120

約数和(自身を含む): 43257984

約数和(自身を除く): 22744491

約数列:

[1, 3, 7, 9, 11, 13, 21, 23, 27, 33, 39, 63, 69, 77, 81, 91, 99, 117, 121, 143, 161, 189, 207, 231, 253, 273, 297, 299, 351, 363, 429, 483, 567, 621, 693, 759, 819, 847, 891, 897, 1001, 1053, 1089, 1287, 1449, 1573, 1771, 1863, 2079, 2093, 2277, 2457, 2541, 2691, 2783, 3003, 3267, 3289, 3861, 4347, 4719, 5313, 6237, 6279, 6831, 7371, 7623, 8073, 8349, 9009, 9801, 9867, 11011, 11583, 13041, 14157, 15939, 18837, 19481, 20493, 22869, 23023, 24219, 25047, 27027, 29601, 33033, 36179, 42471, 47817, 56511, 58443, 68607, 69069, 75141, 81081, 88803, 99099, 108537, 127413, 143451, 169533, 175329, 207207, 225423, 253253, 266409, 297297, 325611, 525987, 621621, 759759, 891891, 976833, 1577961, 1864863, 2279277, 2930499, 6837831, 20513493]

約数ペア:

[(1, 20513493), (3, 6837831), (7, 2930499), (9, 2279277), (11, 1864863), (13, 1577961), (21, 976833), (23, 891891), (27, 759759), (33, 621621), (39, 525987), (63, 325611), (69, 297297), (77, 266409), (81, 253253), (91, 225423), (99, 207207), (117, 175329), (121, 169533), (143, 143451), (161, 127413), (189, 108537), (207, 99099), (231, 88803), (253, 81081), (273, 75141), (297, 69069), (299, 68607), (351, 58443), (363, 56511), (429, 47817), (483, 42471), (567, 36179), (621, 33033), (693, 29601), (759, 27027), (819, 25047), (847, 24219), (891, 23023), (897, 22869), (1001, 20493), (1053, 19481), (1089, 18837), (1287, 15939), (1449, 14157), (1573, 13041), (1771, 11583), (1863, 11011), (2079, 9867), (2093, 9801), (2277, 9009), (2457, 8349), (2541, 8073), (2691, 7623), (2783, 7371), (3003, 6831), (3267, 6279), (3289, 6237), (3861, 5313), (4347, 4719)]