81340160

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 218544480

約数和(自身を除く): 137204320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 53, 55, 64, 80, 88, 106, 109, 110, 128, 160, 176, 212, 218, 220, 256, 265, 320, 352, 424, 436, 440, 530, 545, 583, 640, 704, 848, 872, 880, 1060, 1090, 1166, 1199, 1280, 1408, 1696, 1744, 1760, 2120, 2180, 2332, 2398, 2816, 2915, 3392, 3488, 3520, 4240, 4360, 4664, 4796, 5777, 5830, 5995, 6784, 6976, 7040, 8480, 8720, 9328, 9592, 11554, 11660, 11990, 13568, 13952, 14080, 16960, 17440, 18656, 19184, 23108, 23320, 23980, 27904, 28885, 33920, 34880, 37312, 38368, 46216, 46640, 47960, 57770, 63547, 67840, 69760, 74624, 76736, 92432, 93280, 95920, 115540, 127094, 139520, 149248, 153472, 184864, 186560, 191840, 231080, 254188, 306944, 317735, 369728, 373120, 383680, 462160, 508376, 635470, 739456, 746240, 767360, 924320, 1016752, 1270940, 1478912, 1534720, 1848640, 2033504, 2541880, 3697280, 4067008, 5083760, 7394560, 8134016, 10167520, 16268032, 20335040, 40670080, 81340160]

約数ペア:

[(1, 81340160), (2, 40670080), (4, 20335040), (5, 16268032), (8, 10167520), (10, 8134016), (11, 7394560), (16, 5083760), (20, 4067008), (22, 3697280), (32, 2541880), (40, 2033504), (44, 1848640), (53, 1534720), (55, 1478912), (64, 1270940), (80, 1016752), (88, 924320), (106, 767360), (109, 746240), (110, 739456), (128, 635470), (160, 508376), (176, 462160), (212, 383680), (218, 373120), (220, 369728), (256, 317735), (265, 306944), (320, 254188), (352, 231080), (424, 191840), (436, 186560), (440, 184864), (530, 153472), (545, 149248), (583, 139520), (640, 127094), (704, 115540), (848, 95920), (872, 93280), (880, 92432), (1060, 76736), (1090, 74624), (1166, 69760), (1199, 67840), (1280, 63547), (1408, 57770), (1696, 47960), (1744, 46640), (1760, 46216), (2120, 38368), (2180, 37312), (2332, 34880), (2398, 33920), (2816, 28885), (2915, 27904), (3392, 23980), (3488, 23320), (3520, 23108), (4240, 19184), (4360, 18656), (4664, 17440), (4796, 16960), (5777, 14080), (5830, 13952), (5995, 13568), (6784, 11990), (6976, 11660), (7040, 11554), (8480, 9592), (8720, 9328)]