18628180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15269}}^1$

素因数の和:15339

約数の個数: 24

約数和(自身を含む): 39763080

約数和(自身を除く): 21134900

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15269, 30538, 61076, 76345, 152690, 305380, 931409, 1862818, 3725636, 4657045, 9314090, 18628180]

約数ペア:

[(1, 18628180), (2, 9314090), (4, 4657045), (5, 3725636), (10, 1862818), (20, 931409), (61, 305380), (122, 152690), (244, 76345), (305, 61076), (610, 30538), (1220, 15269)]