256225785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{2531}}^1$

素因数の和:2953

約数の個数: 32

約数和(自身を含む): 435341952

約数和(自身を除く): 179116167

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 397, 1191, 1985, 2531, 5955, 6749, 7593, 12655, 20247, 33745, 37965, 43027, 101235, 129081, 215135, 645405, 1004807, 3014421, 5024035, 15072105, 17081719, 51245157, 85408595, 256225785]

約数ペア:

[(1, 256225785), (3, 85408595), (5, 51245157), (15, 17081719), (17, 15072105), (51, 5024035), (85, 3014421), (255, 1004807), (397, 645405), (1191, 215135), (1985, 129081), (2531, 101235), (5955, 43027), (6749, 37965), (7593, 33745), (12655, 20247)]