640061968

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1361}}^1$

素因数の和:1425

約数の個数: 160

約数和(自身を含む): 1702391040

約数和(自身を除く): 1062329072

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 19, 26, 28, 34, 38, 52, 56, 68, 76, 91, 104, 112, 119, 133, 136, 152, 182, 208, 221, 238, 247, 266, 272, 304, 323, 364, 442, 476, 494, 532, 646, 728, 884, 952, 988, 1064, 1292, 1361, 1456, 1547, 1729, 1768, 1904, 1976, 2128, 2261, 2584, 2722, 3094, 3458, 3536, 3952, 4199, 4522, 5168, 5444, 6188, 6916, 8398, 9044, 9527, 10888, 12376, 13832, 16796, 17693, 18088, 19054, 21776, 23137, 24752, 25859, 27664, 29393, 33592, 35386, 36176, 38108, 46274, 51718, 58786, 67184, 70772, 76216, 92548, 103436, 117572, 123851, 141544, 152432, 161959, 181013, 185096, 206872, 235144, 247702, 283088, 300781, 323918, 336167, 362026, 370192, 413744, 439603, 470288, 495404, 601562, 647836, 672334, 724052, 879206, 990808, 1203124, 1295672, 1344668, 1448104, 1758412, 1981616, 2105467, 2353169, 2406248, 2591344, 2689336, 2896208, 3077221, 3516824, 4210934, 4706338, 4812496, 5378672, 5714839, 6154442, 7033648, 8421868, 9412676, 11429678, 12308884, 16843736, 18825352, 22859356, 24617768, 33687472, 37650704, 40003873, 45718712, 49235536, 80007746, 91437424, 160015492, 320030984, 640061968]

約数ペア:

[(1, 640061968), (2, 320030984), (4, 160015492), (7, 91437424), (8, 80007746), (13, 49235536), (14, 45718712), (16, 40003873), (17, 37650704), (19, 33687472), (26, 24617768), (28, 22859356), (34, 18825352), (38, 16843736), (52, 12308884), (56, 11429678), (68, 9412676), (76, 8421868), (91, 7033648), (104, 6154442), (112, 5714839), (119, 5378672), (133, 4812496), (136, 4706338), (152, 4210934), (182, 3516824), (208, 3077221), (221, 2896208), (238, 2689336), (247, 2591344), (266, 2406248), (272, 2353169), (304, 2105467), (323, 1981616), (364, 1758412), (442, 1448104), (476, 1344668), (494, 1295672), (532, 1203124), (646, 990808), (728, 879206), (884, 724052), (952, 672334), (988, 647836), (1064, 601562), (1292, 495404), (1361, 470288), (1456, 439603), (1547, 413744), (1729, 370192), (1768, 362026), (1904, 336167), (1976, 323918), (2128, 300781), (2261, 283088), (2584, 247702), (2722, 235144), (3094, 206872), (3458, 185096), (3536, 181013), (3952, 161959), (4199, 152432), (4522, 141544), (5168, 123851), (5444, 117572), (6188, 103436), (6916, 92548), (8398, 76216), (9044, 70772), (9527, 67184), (10888, 58786), (12376, 51718), (13832, 46274), (16796, 38108), (17693, 36176), (18088, 35386), (19054, 33592), (21776, 29393), (23137, 27664), (24752, 25859)]