20791212897

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:244

約数の個数: 192

約数和(自身を含む): 38365071360

約数和(自身を除く): 17573858463

約数列:

[1, 3, 7, 13, 19, 21, 31, 39, 43, 57, 91, 93, 97, 129, 133, 217, 247, 273, 291, 301, 399, 403, 559, 589, 651, 679, 741, 817, 903, 961, 1209, 1261, 1333, 1677, 1729, 1767, 1843, 2037, 2451, 2821, 2883, 3007, 3783, 3913, 3999, 4123, 4171, 5187, 5529, 5719, 6727, 7657, 8463, 8827, 9021, 9331, 10621, 11739, 12369, 12493, 12513, 12901, 17157, 17329, 18259, 20181, 21049, 22971, 23959, 25327, 26481, 27993, 29197, 31863, 37479, 38703, 39091, 41323, 51987, 53599, 54223, 54777, 57133, 63147, 71877, 74347, 75981, 79249, 87451, 87591, 93217, 117273, 121303, 123969, 127813, 129301, 160797, 162669, 167713, 171399, 177289, 223041, 237367, 237747, 262353, 273637, 279651, 289261, 329251, 363909, 379561, 383439, 387903, 399931, 503139, 531867, 537199, 554743, 652519, 712101, 742729, 785137, 820911, 867783, 905107, 987753, 1030237, 1138683, 1199793, 1211821, 1611597, 1661569, 1664229, 1680913, 1771123, 1957557, 2228187, 2304757, 2355411, 2456719, 2715321, 3090711, 3635463, 3760393, 4008331, 4984707, 5042739, 5199103, 5313369, 5495959, 6914271, 7211659, 7370157, 8482747, 10206781, 11281179, 11766391, 12024993, 12397861, 15597309, 16487877, 17197033, 21634977, 23024599, 25448241, 28058317, 30620343, 31937347, 35299173, 37193583, 51591099, 52108303, 69073797, 71447467, 76158289, 84174951, 95812041, 156324909, 161172193, 214342401, 223561429, 228474867, 364758121, 483516579, 533108023, 670684287, 990057757, 1094274363, 1599324069, 2970173271, 6930404299, 20791212897]

約数ペア:

[(1, 20791212897), (3, 6930404299), (7, 2970173271), (13, 1599324069), (19, 1094274363), (21, 990057757), (31, 670684287), (39, 533108023), (43, 483516579), (57, 364758121), (91, 228474867), (93, 223561429), (97, 214342401), (129, 161172193), (133, 156324909), (217, 95812041), (247, 84174951), (273, 76158289), (291, 71447467), (301, 69073797), (399, 52108303), (403, 51591099), (559, 37193583), (589, 35299173), (651, 31937347), (679, 30620343), (741, 28058317), (817, 25448241), (903, 23024599), (961, 21634977), (1209, 17197033), (1261, 16487877), (1333, 15597309), (1677, 12397861), (1729, 12024993), (1767, 11766391), (1843, 11281179), (2037, 10206781), (2451, 8482747), (2821, 7370157), (2883, 7211659), (3007, 6914271), (3783, 5495959), (3913, 5313369), (3999, 5199103), (4123, 5042739), (4171, 4984707), (5187, 4008331), (5529, 3760393), (5719, 3635463), (6727, 3090711), (7657, 2715321), (8463, 2456719), (8827, 2355411), (9021, 2304757), (9331, 2228187), (10621, 1957557), (11739, 1771123), (12369, 1680913), (12493, 1664229), (12513, 1661569), (12901, 1611597), (17157, 1211821), (17329, 1199793), (18259, 1138683), (20181, 1030237), (21049, 987753), (22971, 905107), (23959, 867783), (25327, 820911), (26481, 785137), (27993, 742729), (29197, 712101), (31863, 652519), (37479, 554743), (38703, 537199), (39091, 531867), (41323, 503139), (51987, 399931), (53599, 387903), (54223, 383439), (54777, 379561), (57133, 363909), (63147, 329251), (71877, 289261), (74347, 279651), (75981, 273637), (79249, 262353), (87451, 237747), (87591, 237367), (93217, 223041), (117273, 177289), (121303, 171399), (123969, 167713), (127813, 162669), (129301, 160797)]