9781540

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3851}}^1$

素因数の和:3987

約数の個数: 24

約数和(自身を含む): 20708352

約数和(自身を除く): 10926812

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 3851, 7702, 15404, 19255, 38510, 77020, 489077, 978154, 1956308, 2445385, 4890770, 9781540]

約数ペア:

[(1, 9781540), (2, 4890770), (4, 2445385), (5, 1956308), (10, 978154), (20, 489077), (127, 77020), (254, 38510), (508, 19255), (635, 15404), (1270, 7702), (2540, 3851)]