20407625

素因数分解:

$5^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 29562624

約数和(自身を除く): 9154999

約数列:

[1, 5, 7, 25, 35, 83, 125, 175, 281, 415, 581, 875, 1405, 1967, 2075, 2905, 7025, 9835, 10375, 14525, 23323, 35125, 49175, 72625, 116615, 163261, 245875, 583075, 816305, 2915375, 4081525, 20407625]

約数ペア:

[(1, 20407625), (5, 4081525), (7, 2915375), (25, 816305), (35, 583075), (83, 245875), (125, 163261), (175, 116615), (281, 72625), (415, 49175), (581, 35125), (875, 23323), (1405, 14525), (1967, 10375), (2075, 9835), (2905, 7025)]