1247879920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{5557}}^1$

素因数の和:5978

約数の個数: 80

約数和(自身を含む): 3324662208

約数和(自身を除く): 2076782288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 401, 560, 802, 1604, 2005, 2807, 3208, 4010, 5557, 5614, 6416, 8020, 11114, 11228, 14035, 16040, 22228, 22456, 27785, 28070, 32080, 38899, 44456, 44912, 55570, 56140, 77798, 88912, 111140, 112280, 155596, 194495, 222280, 224560, 311192, 388990, 444560, 622384, 777980, 1555960, 2228357, 3111920, 4456714, 8913428, 11141785, 15598499, 17826856, 22283570, 31196998, 35653712, 44567140, 62393996, 77992495, 89134280, 124787992, 155984990, 178268560, 249575984, 311969980, 623939960, 1247879920]

約数ペア:

[(1, 1247879920), (2, 623939960), (4, 311969980), (5, 249575984), (7, 178268560), (8, 155984990), (10, 124787992), (14, 89134280), (16, 77992495), (20, 62393996), (28, 44567140), (35, 35653712), (40, 31196998), (56, 22283570), (70, 17826856), (80, 15598499), (112, 11141785), (140, 8913428), (280, 4456714), (401, 3111920), (560, 2228357), (802, 1555960), (1604, 777980), (2005, 622384), (2807, 444560), (3208, 388990), (4010, 311192), (5557, 224560), (5614, 222280), (6416, 194495), (8020, 155596), (11114, 112280), (11228, 111140), (14035, 88912), (16040, 77798), (22228, 56140), (22456, 55570), (27785, 44912), (28070, 44456), (32080, 38899)]