128123820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64709}}^1$

素因数の和:64735

約数の個数: 72

約数和(自身を含む): 423979920

約数和(自身を除く): 295856100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 64709, 129418, 194127, 258836, 323545, 388254, 582381, 647090, 711799, 776508, 970635, 1164762, 1294180, 1423598, 1941270, 2135397, 2329524, 2847196, 2911905, 3558995, 3882540, 4270794, 5823810, 6406191, 7117990, 8541588, 10676985, 11647620, 12812382, 14235980, 21353970, 25624764, 32030955, 42707940, 64061910, 128123820]

約数ペア:

[(1, 128123820), (2, 64061910), (3, 42707940), (4, 32030955), (5, 25624764), (6, 21353970), (9, 14235980), (10, 12812382), (11, 11647620), (12, 10676985), (15, 8541588), (18, 7117990), (20, 6406191), (22, 5823810), (30, 4270794), (33, 3882540), (36, 3558995), (44, 2911905), (45, 2847196), (55, 2329524), (60, 2135397), (66, 1941270), (90, 1423598), (99, 1294180), (110, 1164762), (132, 970635), (165, 776508), (180, 711799), (198, 647090), (220, 582381), (330, 388254), (396, 323545), (495, 258836), (660, 194127), (990, 129418), (1980, 64709)]