21155000

素因数分解:

$2^3\times 5^4\times {\mathrm{4231}}^1$

素因数の和:4257

約数の個数: 40

約数和(自身を含む): 49577880

約数和(自身を除く): 28422880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4231, 5000, 8462, 16924, 21155, 33848, 42310, 84620, 105775, 169240, 211550, 423100, 528875, 846200, 1057750, 2115500, 2644375, 4231000, 5288750, 10577500, 21155000]

約数ペア:

[(1, 21155000), (2, 10577500), (4, 5288750), (5, 4231000), (8, 2644375), (10, 2115500), (20, 1057750), (25, 846200), (40, 528875), (50, 423100), (100, 211550), (125, 169240), (200, 105775), (250, 84620), (500, 42310), (625, 33848), (1000, 21155), (1250, 16924), (2500, 8462), (4231, 5000)]