20710855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19819}}^1$

素因数の和:19854

約数の個数: 16

約数和(自身を含む): 28540800

約数和(自身を除く): 7829945

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19819, 99095, 218009, 376561, 1090045, 1882805, 4142171, 20710855]

約数ペア:

[(1, 20710855), (5, 4142171), (11, 1882805), (19, 1090045), (55, 376561), (95, 218009), (209, 99095), (1045, 19819)]