19979911210

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{383}}^1$

素因数の和:705

約数の個数: 128

約数和(自身を含む): 42865459200

約数和(自身を除く): 22885547990

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 67, 70, 98, 134, 227, 245, 335, 343, 383, 454, 469, 490, 670, 686, 766, 938, 1135, 1589, 1715, 1915, 2270, 2345, 2681, 3178, 3283, 3430, 3830, 4690, 5362, 6566, 7945, 11123, 13405, 15209, 15890, 16415, 18767, 22246, 22981, 25661, 26810, 30418, 32830, 37534, 45962, 51322, 55615, 76045, 77861, 86941, 93835, 106463, 111230, 114905, 128305, 131369, 152090, 155722, 173882, 179627, 187670, 212926, 229810, 256610, 262738, 359254, 389305, 434705, 532315, 608587, 656845, 745241, 778610, 869410, 898135, 1064630, 1217174, 1257389, 1313690, 1490482, 1796270, 2514778, 3042935, 3726205, 4260109, 5216687, 5825047, 6085870, 6286945, 7452410, 8520218, 8801723, 10433374, 11650094, 12573890, 17603446, 21300545, 26083435, 29125235, 29820763, 40775329, 42601090, 44008615, 52166870, 58250470, 59641526, 81550658, 88017230, 149103815, 203876645, 285427303, 298207630, 407753290, 570854606, 1427136515, 1997991121, 2854273030, 3995982242, 9989955605, 19979911210]

約数ペア:

[(1, 19979911210), (2, 9989955605), (5, 3995982242), (7, 2854273030), (10, 1997991121), (14, 1427136515), (35, 570854606), (49, 407753290), (67, 298207630), (70, 285427303), (98, 203876645), (134, 149103815), (227, 88017230), (245, 81550658), (335, 59641526), (343, 58250470), (383, 52166870), (454, 44008615), (469, 42601090), (490, 40775329), (670, 29820763), (686, 29125235), (766, 26083435), (938, 21300545), (1135, 17603446), (1589, 12573890), (1715, 11650094), (1915, 10433374), (2270, 8801723), (2345, 8520218), (2681, 7452410), (3178, 6286945), (3283, 6085870), (3430, 5825047), (3830, 5216687), (4690, 4260109), (5362, 3726205), (6566, 3042935), (7945, 2514778), (11123, 1796270), (13405, 1490482), (15209, 1313690), (15890, 1257389), (16415, 1217174), (18767, 1064630), (22246, 898135), (22981, 869410), (25661, 778610), (26810, 745241), (30418, 656845), (32830, 608587), (37534, 532315), (45962, 434705), (51322, 389305), (55615, 359254), (76045, 262738), (77861, 256610), (86941, 229810), (93835, 212926), (106463, 187670), (111230, 179627), (114905, 173882), (128305, 155722), (131369, 152090)]