18901295

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:735

約数の個数: 32

約数和(自身を含む): 27962880

約数和(自身を除く): 9061585

約数列:

[1, 5, 7, 19, 35, 43, 95, 133, 215, 301, 661, 665, 817, 1505, 3305, 4085, 4627, 5719, 12559, 23135, 28423, 28595, 62795, 87913, 142115, 198961, 439565, 540037, 994805, 2700185, 3780259, 18901295]

約数ペア:

[(1, 18901295), (5, 3780259), (7, 2700185), (19, 994805), (35, 540037), (43, 439565), (95, 198961), (133, 142115), (215, 87913), (301, 62795), (661, 28595), (665, 28423), (817, 23135), (1505, 12559), (3305, 5719), (4085, 4627)]