81321285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{318907}}^1$

素因数の和:318932

約数の個数: 16

約数和(自身を含む): 137768256

約数和(自身を除く): 56446971

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 318907, 956721, 1594535, 4783605, 5421419, 16264257, 27107095, 81321285]

約数ペア:

[(1, 81321285), (3, 27107095), (5, 16264257), (15, 5421419), (17, 4783605), (51, 1594535), (85, 956721), (255, 318907)]