19810404

素因数分解:

$2^2\times 3^2\times {\mathrm{550289}}^1$

素因数の和:550299

約数の個数: 18

約数和(自身を含む): 50076390

約数和(自身を除く): 30265986

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 550289, 1100578, 1650867, 2201156, 3301734, 4952601, 6603468, 9905202, 19810404]

約数ペア:

[(1, 19810404), (2, 9905202), (3, 6603468), (4, 4952601), (6, 3301734), (9, 2201156), (12, 1650867), (18, 1100578), (36, 550289)]