645804

素因数分解:

$2^2\times 3^2\times {\mathrm{17939}}^1$

素因数の和:17949

約数の個数: 18

約数和(自身を含む): 1632540

約数和(自身を除く): 986736

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 17939, 35878, 53817, 71756, 107634, 161451, 215268, 322902, 645804]

約数ペア:

[(1, 645804), (2, 322902), (3, 215268), (4, 161451), (6, 107634), (9, 71756), (12, 53817), (18, 35878), (36, 17939)]