80909920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5557}}^1$

素因数の和:5592

約数の個数: 96

約数和(自身を含む): 235303488

約数和(自身を除く): 154393568

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1456, 1820, 2080, 2912, 3640, 5557, 7280, 11114, 14560, 22228, 27785, 38899, 44456, 55570, 72241, 77798, 88912, 111140, 144482, 155596, 177824, 194495, 222280, 288964, 311192, 361205, 388990, 444560, 505687, 577928, 622384, 722410, 777980, 889120, 1011374, 1155856, 1244768, 1444820, 1555960, 2022748, 2311712, 2528435, 2889640, 3111920, 4045496, 5056870, 5779280, 6223840, 8090992, 10113740, 11558560, 16181984, 20227480, 40454960, 80909920]

約数ペア:

[(1, 80909920), (2, 40454960), (4, 20227480), (5, 16181984), (7, 11558560), (8, 10113740), (10, 8090992), (13, 6223840), (14, 5779280), (16, 5056870), (20, 4045496), (26, 3111920), (28, 2889640), (32, 2528435), (35, 2311712), (40, 2022748), (52, 1555960), (56, 1444820), (65, 1244768), (70, 1155856), (80, 1011374), (91, 889120), (104, 777980), (112, 722410), (130, 622384), (140, 577928), (160, 505687), (182, 444560), (208, 388990), (224, 361205), (260, 311192), (280, 288964), (364, 222280), (416, 194495), (455, 177824), (520, 155596), (560, 144482), (728, 111140), (910, 88912), (1040, 77798), (1120, 72241), (1456, 55570), (1820, 44456), (2080, 38899), (2912, 27785), (3640, 22228), (5557, 14560), (7280, 11114)]