18718660

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{12821}}^1$

素因数の和:12903

約数の個数: 24

約数和(自身を含む): 39850776

約数和(自身を除く): 21132116

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 12821, 25642, 51284, 64105, 128210, 256420, 935933, 1871866, 3743732, 4679665, 9359330, 18718660]

約数ペア:

[(1, 18718660), (2, 9359330), (4, 4679665), (5, 3743732), (10, 1871866), (20, 935933), (73, 256420), (146, 128210), (292, 64105), (365, 51284), (730, 25642), (1460, 12821)]