19742345

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1321}}^1$

素因数の和:1401

約数の個数: 24

約数和(自身を含む): 28031688

約数和(自身を除く): 8289343

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 1321, 2135, 2989, 6605, 9247, 14945, 46235, 64729, 80581, 323645, 402905, 564067, 2820335, 3948469, 19742345]

約数ペア:

[(1, 19742345), (5, 3948469), (7, 2820335), (35, 564067), (49, 402905), (61, 323645), (245, 80581), (305, 64729), (427, 46235), (1321, 14945), (2135, 9247), (2989, 6605)]