21000833315

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{12119}}^1$

素因数の和:12792

約数の個数: 48

約数和(自身を含む): 32032869120

約数和(自身を除く): 11032035805

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 643, 2695, 3215, 4501, 7073, 12119, 22505, 31507, 35365, 49511, 60595, 84833, 133309, 157535, 247555, 346577, 424165, 593831, 666545, 933163, 1732885, 2969155, 4665815, 6532141, 7792517, 32660705, 38962585, 54547619, 85717687, 272738095, 381833333, 428588435, 600023809, 1909166665, 3000119045, 4200166663, 21000833315]

約数ペア:

[(1, 21000833315), (5, 4200166663), (7, 3000119045), (11, 1909166665), (35, 600023809), (49, 428588435), (55, 381833333), (77, 272738095), (245, 85717687), (385, 54547619), (539, 38962585), (643, 32660705), (2695, 7792517), (3215, 6532141), (4501, 4665815), (7073, 2969155), (12119, 1732885), (22505, 933163), (31507, 666545), (35365, 593831), (49511, 424165), (60595, 346577), (84833, 247555), (133309, 157535)]