20727175

素因数分解:

$5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1427}}^1$

素因数の和:1527

約数の個数: 24

約数和(自身を含む): 29748096

約数和(自身を除く): 9020921

約数列:

[1, 5, 7, 25, 35, 83, 175, 415, 581, 1427, 2075, 2905, 7135, 9989, 14525, 35675, 49945, 118441, 249725, 592205, 829087, 2961025, 4145435, 20727175]

約数ペア:

[(1, 20727175), (5, 4145435), (7, 2961025), (25, 829087), (35, 592205), (83, 249725), (175, 118441), (415, 49945), (581, 35675), (1427, 14525), (2075, 9989), (2905, 7135)]