816284680

素因数分解:

$2^3\times 5^1\times {\mathrm{20407117}}^1$

素因数の和:20407128

約数の個数: 16

約数和(自身を含む): 1836640620

約数和(自身を除く): 1020355940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20407117, 40814234, 81628468, 102035585, 163256936, 204071170, 408142340, 816284680]

約数ペア:

[(1, 816284680), (2, 408142340), (4, 204071170), (5, 163256936), (8, 102035585), (10, 81628468), (20, 40814234), (40, 20407117)]