19720372221

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1\times {\mathrm{13163}}^1$

素因数の和:13626

約数の個数: 48

約数和(自身を含む): 31994838720

約数和(自身を除く): 12274466499

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 409, 1221, 1227, 3663, 3681, 4499, 13163, 13497, 15133, 39489, 40491, 45399, 118467, 136197, 144793, 166463, 434379, 487031, 499389, 1303137, 1461093, 1498167, 4383279, 5357341, 5383667, 16072023, 16151001, 48216069, 48453003, 59220337, 177661011, 199195679, 532983033, 597587037, 1792761111, 2191152469, 6573457407, 19720372221]

約数ペア:

[(1, 19720372221), (3, 6573457407), (9, 2191152469), (11, 1792761111), (33, 597587037), (37, 532983033), (99, 199195679), (111, 177661011), (333, 59220337), (407, 48453003), (409, 48216069), (1221, 16151001), (1227, 16072023), (3663, 5383667), (3681, 5357341), (4499, 4383279), (13163, 1498167), (13497, 1461093), (15133, 1303137), (39489, 499389), (40491, 487031), (45399, 434379), (118467, 166463), (136197, 144793)]