1640807080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:535

約数の個数: 128

約数和(自身を含む): 4115059200

約数和(自身を除く): 2474252120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 179, 220, 251, 332, 358, 415, 440, 502, 664, 716, 830, 895, 913, 1004, 1255, 1432, 1660, 1790, 1826, 1969, 2008, 2510, 2761, 3320, 3580, 3652, 3938, 4565, 5020, 5522, 7160, 7304, 7876, 9130, 9845, 10040, 11044, 13805, 14857, 15752, 18260, 19690, 20833, 22088, 27610, 29714, 36520, 39380, 41666, 44929, 55220, 59428, 74285, 78760, 83332, 89858, 104165, 110440, 118856, 148570, 163427, 166664, 179716, 208330, 224645, 229163, 297140, 326854, 359432, 416660, 449290, 458326, 494219, 594280, 653708, 817135, 833320, 898580, 916652, 988438, 1145815, 1307416, 1634270, 1797160, 1833304, 1976876, 2291630, 2471095, 3268540, 3729107, 3953752, 4583260, 4942190, 6537080, 7458214, 9166520, 9884380, 14916428, 18645535, 19768760, 29832856, 37291070, 41020177, 74582140, 82040354, 149164280, 164080708, 205100885, 328161416, 410201770, 820403540, 1640807080]

約数ペア:

[(1, 1640807080), (2, 820403540), (4, 410201770), (5, 328161416), (8, 205100885), (10, 164080708), (11, 149164280), (20, 82040354), (22, 74582140), (40, 41020177), (44, 37291070), (55, 29832856), (83, 19768760), (88, 18645535), (110, 14916428), (166, 9884380), (179, 9166520), (220, 7458214), (251, 6537080), (332, 4942190), (358, 4583260), (415, 3953752), (440, 3729107), (502, 3268540), (664, 2471095), (716, 2291630), (830, 1976876), (895, 1833304), (913, 1797160), (1004, 1634270), (1255, 1307416), (1432, 1145815), (1660, 988438), (1790, 916652), (1826, 898580), (1969, 833320), (2008, 817135), (2510, 653708), (2761, 594280), (3320, 494219), (3580, 458326), (3652, 449290), (3938, 416660), (4565, 359432), (5020, 326854), (5522, 297140), (7160, 229163), (7304, 224645), (7876, 208330), (9130, 179716), (9845, 166664), (10040, 163427), (11044, 148570), (13805, 118856), (14857, 110440), (15752, 104165), (18260, 89858), (19690, 83332), (20833, 78760), (22088, 74285), (27610, 59428), (29714, 55220), (36520, 44929), (39380, 41666)]