1998889720

素因数分解:

$2^3\times 5^1\times {\mathrm{947}}^1\times {\mathrm{52769}}^1$

素因数の和:53727

約数の個数: 32

約数和(自身を含む): 4502336400

約数和(自身を除く): 2503446680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 947, 1894, 3788, 4735, 7576, 9470, 18940, 37880, 52769, 105538, 211076, 263845, 422152, 527690, 1055380, 2110760, 49972243, 99944486, 199888972, 249861215, 399777944, 499722430, 999444860, 1998889720]

約数ペア:

[(1, 1998889720), (2, 999444860), (4, 499722430), (5, 399777944), (8, 249861215), (10, 199888972), (20, 99944486), (40, 49972243), (947, 2110760), (1894, 1055380), (3788, 527690), (4735, 422152), (7576, 263845), (9470, 211076), (18940, 105538), (37880, 52769)]