21868052

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18917}}^1$

素因数の和:18955

約数の個数: 18

約数和(自身を含む): 40654782

約数和(自身を除く): 18786730

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18917, 37834, 75668, 321589, 643178, 1286356, 5467013, 10934026, 21868052]

約数ペア:

[(1, 21868052), (2, 10934026), (4, 5467013), (17, 1286356), (34, 643178), (68, 321589), (289, 75668), (578, 37834), (1156, 18917)]