20850725

素因数分解:

$5^2\times 7^2\times {\mathrm{17021}}^1$

素因数の和:17045

約数の個数: 18

約数和(自身を含む): 30077874

約数和(自身を除く): 9227149

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 17021, 85105, 119147, 425525, 595735, 834029, 2978675, 4170145, 20850725]

約数ペア:

[(1, 20850725), (5, 4170145), (7, 2978675), (25, 834029), (35, 595735), (49, 425525), (175, 119147), (245, 85105), (1225, 17021)]