18939725

素因数分解:

$5^2\times 7^2\times {\mathrm{15461}}^1$

素因数の和:15485

約数の個数: 18

約数和(自身を含む): 27321354

約数和(自身を除く): 8381629

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 15461, 77305, 108227, 386525, 541135, 757589, 2705675, 3787945, 18939725]

約数ペア:

[(1, 18939725), (5, 3787945), (7, 2705675), (25, 757589), (35, 541135), (49, 386525), (175, 108227), (245, 77305), (1225, 15461)]