81270539

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1\times {\mathrm{523}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 94571520

約数和(自身を除く): 13300981

約数列:

[1, 7, 79, 281, 523, 553, 1967, 3661, 22199, 41317, 146963, 155393, 289219, 1028741, 11610077, 81270539]

約数ペア:

[(1, 81270539), (7, 11610077), (79, 1028741), (281, 289219), (523, 155393), (553, 146963), (1967, 41317), (3661, 22199)]