21177970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10133}}^1$

素因数の和:10170

約数の個数: 32

約数和(自身を含む): 43778880

約数和(自身を除く): 22600910

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 10133, 20266, 50665, 101330, 111463, 192527, 222926, 385054, 557315, 962635, 1114630, 1925270, 2117797, 4235594, 10588985, 21177970]

約数ペア:

[(1, 21177970), (2, 10588985), (5, 4235594), (10, 2117797), (11, 1925270), (19, 1114630), (22, 962635), (38, 557315), (55, 385054), (95, 222926), (110, 192527), (190, 111463), (209, 101330), (418, 50665), (1045, 20266), (2090, 10133)]