640881045

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:225

約数の個数: 192

約数和(自身を含む): 1447891200

約数和(自身を除く): 807010155

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 41, 45, 49, 51, 63, 85, 105, 119, 123, 135, 139, 147, 153, 189, 205, 245, 255, 287, 315, 357, 369, 417, 441, 459, 595, 615, 695, 697, 735, 765, 833, 861, 945, 973, 1071, 1107, 1251, 1323, 1435, 1785, 1845, 2009, 2085, 2091, 2205, 2295, 2363, 2499, 2583, 2919, 3213, 3485, 3753, 4165, 4305, 4865, 4879, 5355, 5535, 5699, 6027, 6255, 6273, 6615, 6811, 7089, 7497, 7749, 8757, 10045, 10455, 11815, 12495, 12915, 14595, 14637, 16065, 16541, 17097, 18081, 18765, 18819, 20433, 21267, 22491, 24395, 26271, 28495, 30135, 31365, 34055, 34153, 35445, 37485, 38745, 39893, 43785, 43911, 49623, 51291, 54243, 61299, 63801, 73185, 82705, 85485, 90405, 94095, 96883, 102165, 102459, 106335, 112455, 115787, 119679, 131355, 131733, 148869, 153873, 170765, 183897, 199465, 219555, 248115, 256455, 271215, 279251, 290649, 306495, 307377, 319005, 347361, 359037, 446607, 484415, 512295, 578935, 598395, 658665, 678181, 744345, 769365, 837753, 871947, 919485, 922131, 1042083, 1077111, 1396255, 1453245, 1536885, 1736805, 1795185, 2034543, 2233035, 2513259, 2615841, 3126249, 3390905, 4188765, 4359735, 4610655, 4747267, 5210415, 5385555, 6103629, 7539777, 10172715, 12566295, 13079205, 14241801, 15631245, 18310887, 23736335, 30518145, 37698885, 42725403, 71209005, 91554435, 128176209, 213627015, 640881045]

約数ペア:

[(1, 640881045), (3, 213627015), (5, 128176209), (7, 91554435), (9, 71209005), (15, 42725403), (17, 37698885), (21, 30518145), (27, 23736335), (35, 18310887), (41, 15631245), (45, 14241801), (49, 13079205), (51, 12566295), (63, 10172715), (85, 7539777), (105, 6103629), (119, 5385555), (123, 5210415), (135, 4747267), (139, 4610655), (147, 4359735), (153, 4188765), (189, 3390905), (205, 3126249), (245, 2615841), (255, 2513259), (287, 2233035), (315, 2034543), (357, 1795185), (369, 1736805), (417, 1536885), (441, 1453245), (459, 1396255), (595, 1077111), (615, 1042083), (695, 922131), (697, 919485), (735, 871947), (765, 837753), (833, 769365), (861, 744345), (945, 678181), (973, 658665), (1071, 598395), (1107, 578935), (1251, 512295), (1323, 484415), (1435, 446607), (1785, 359037), (1845, 347361), (2009, 319005), (2085, 307377), (2091, 306495), (2205, 290649), (2295, 279251), (2363, 271215), (2499, 256455), (2583, 248115), (2919, 219555), (3213, 199465), (3485, 183897), (3753, 170765), (4165, 153873), (4305, 148869), (4865, 131733), (4879, 131355), (5355, 119679), (5535, 115787), (5699, 112455), (6027, 106335), (6255, 102459), (6273, 102165), (6615, 96883), (6811, 94095), (7089, 90405), (7497, 85485), (7749, 82705), (8757, 73185), (10045, 63801), (10455, 61299), (11815, 54243), (12495, 51291), (12915, 49623), (14595, 43911), (14637, 43785), (16065, 39893), (16541, 38745), (17097, 37485), (18081, 35445), (18765, 34153), (18819, 34055), (20433, 31365), (21267, 30135), (22491, 28495), (24395, 26271)]