18791540

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{19991}}^1$

素因数の和:20047

約数の個数: 24

約数和(自身を含む): 40303872

約数和(自身を除く): 21512332

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 19991, 39982, 79964, 99955, 199910, 399820, 939577, 1879154, 3758308, 4697885, 9395770, 18791540]

約数ペア:

[(1, 18791540), (2, 9395770), (4, 4697885), (5, 3758308), (10, 1879154), (20, 939577), (47, 399820), (94, 199910), (188, 99955), (235, 79964), (470, 39982), (940, 19991)]