19980625

素因数分解:

$5^4\times 7^1\times {\mathrm{4567}}^1$

素因数の和:4594

約数の個数: 20

約数和(自身を含む): 28540864

約数和(自身を除く): 8560239

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4567, 22835, 31969, 114175, 159845, 570875, 799225, 2854375, 3996125, 19980625]

約数ペア:

[(1, 19980625), (5, 3996125), (7, 2854375), (25, 799225), (35, 570875), (125, 159845), (175, 114175), (625, 31969), (875, 22835), (4375, 4567)]