821770565

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:219

約数の個数: 128

約数和(自身を含む): 1397440512

約数和(自身を除く): 575669947

約数列:

[1, 5, 7, 11, 17, 23, 35, 53, 55, 77, 85, 103, 115, 119, 161, 187, 253, 265, 371, 385, 391, 515, 583, 595, 721, 805, 901, 935, 1133, 1219, 1265, 1309, 1751, 1771, 1855, 1955, 2369, 2737, 2915, 3605, 4081, 4301, 4505, 5459, 5665, 6095, 6307, 6545, 7931, 8533, 8755, 8855, 9911, 11845, 12257, 13409, 13685, 16583, 19261, 20405, 20723, 21505, 26059, 27295, 30107, 31535, 38213, 39655, 40273, 42665, 49555, 60049, 61285, 67045, 69377, 82915, 92803, 93863, 96305, 103615, 125557, 130295, 134827, 145061, 150535, 182413, 191065, 201365, 227953, 281911, 300245, 346885, 420343, 443003, 464015, 469315, 627785, 649621, 674135, 725305, 878899, 912065, 1020833, 1139765, 1381127, 1409555, 1595671, 2101715, 2134469, 2215015, 3101021, 3248105, 4394495, 5104165, 6905635, 7145831, 7978355, 9667889, 10672345, 14941283, 15505105, 23479159, 35729155, 48339445, 74706415, 117395795, 164354113, 821770565]

約数ペア:

[(1, 821770565), (5, 164354113), (7, 117395795), (11, 74706415), (17, 48339445), (23, 35729155), (35, 23479159), (53, 15505105), (55, 14941283), (77, 10672345), (85, 9667889), (103, 7978355), (115, 7145831), (119, 6905635), (161, 5104165), (187, 4394495), (253, 3248105), (265, 3101021), (371, 2215015), (385, 2134469), (391, 2101715), (515, 1595671), (583, 1409555), (595, 1381127), (721, 1139765), (805, 1020833), (901, 912065), (935, 878899), (1133, 725305), (1219, 674135), (1265, 649621), (1309, 627785), (1751, 469315), (1771, 464015), (1855, 443003), (1955, 420343), (2369, 346885), (2737, 300245), (2915, 281911), (3605, 227953), (4081, 201365), (4301, 191065), (4505, 182413), (5459, 150535), (5665, 145061), (6095, 134827), (6307, 130295), (6545, 125557), (7931, 103615), (8533, 96305), (8755, 93863), (8855, 92803), (9911, 82915), (11845, 69377), (12257, 67045), (13409, 61285), (13685, 60049), (16583, 49555), (19261, 42665), (20405, 40273), (20723, 39655), (21505, 38213), (26059, 31535), (27295, 30107)]