21000398540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{95456357}}^1$

素因数の和:95456377

約数の個数: 24

約数和(自身を含む): 48110004432

約数和(自身を除く): 27109605892

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 95456357, 190912714, 381825428, 477281785, 954563570, 1050019927, 1909127140, 2100039854, 4200079708, 5250099635, 10500199270, 21000398540]

約数ペア:

[(1, 21000398540), (2, 10500199270), (4, 5250099635), (5, 4200079708), (10, 2100039854), (11, 1909127140), (20, 1050019927), (22, 954563570), (44, 477281785), (55, 381825428), (110, 190912714), (220, 95456357)]