21000688304

素因数分解:

$2^4\times {\mathrm{1217}}^1\times {\mathrm{1078507}}^1$

素因数の和:1079732

約数の個数: 20

約数和(自身を含む): 40722305064

約数和(自身を除く): 19721616760

約数列:

[1, 2, 4, 8, 16, 1217, 2434, 4868, 9736, 19472, 1078507, 2157014, 4314028, 8628056, 17256112, 1312543019, 2625086038, 5250172076, 10500344152, 21000688304]

約数ペア:

[(1, 21000688304), (2, 10500344152), (4, 5250172076), (8, 2625086038), (16, 1312543019), (1217, 17256112), (2434, 8628056), (4868, 4314028), (9736, 2157014), (19472, 1078507)]