25287920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{6451}}^1$

素因数の和:6478

約数の個数: 60

約数和(自身を含む): 68404104

約数和(自身を除く): 43116184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 6451, 12902, 25804, 32255, 45157, 51608, 64510, 90314, 103216, 129020, 180628, 225785, 258040, 316099, 361256, 451570, 516080, 632198, 722512, 903140, 1264396, 1580495, 1806280, 2528792, 3160990, 3612560, 5057584, 6321980, 12643960, 25287920]

約数ペア:

[(1, 25287920), (2, 12643960), (4, 6321980), (5, 5057584), (7, 3612560), (8, 3160990), (10, 2528792), (14, 1806280), (16, 1580495), (20, 1264396), (28, 903140), (35, 722512), (40, 632198), (49, 516080), (56, 451570), (70, 361256), (80, 316099), (98, 258040), (112, 225785), (140, 180628), (196, 129020), (245, 103216), (280, 90314), (392, 64510), (490, 51608), (560, 45157), (784, 32255), (980, 25804), (1960, 12902), (3920, 6451)]