247385955

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1\times {\mathrm{1433}}^1$

素因数の和:2135

約数の個数: 32

約数和(自身を含む): 420012864

約数和(自身を除く): 172626909

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 677, 1433, 2031, 3385, 4299, 7165, 10155, 11509, 21495, 24361, 34527, 57545, 73083, 121805, 172635, 365415, 970141, 2910423, 4850705, 14552115, 16492397, 49477191, 82461985, 247385955]

約数ペア:

[(1, 247385955), (3, 82461985), (5, 49477191), (15, 16492397), (17, 14552115), (51, 4850705), (85, 2910423), (255, 970141), (677, 365415), (1433, 172635), (2031, 121805), (3385, 73083), (4299, 57545), (7165, 34527), (10155, 24361), (11509, 21495)]