291223480

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{373}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 666468000

約数和(自身を除く): 375244520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 149, 262, 298, 373, 524, 596, 655, 745, 746, 1048, 1192, 1310, 1490, 1492, 1865, 2620, 2980, 2984, 3730, 5240, 5960, 7460, 14920, 19519, 39038, 48863, 55577, 78076, 97595, 97726, 111154, 156152, 195190, 195452, 222308, 244315, 277885, 390380, 390904, 444616, 488630, 555770, 780760, 977260, 1111540, 1954520, 2223080, 7280587, 14561174, 29122348, 36402935, 58244696, 72805870, 145611740, 291223480]

約数ペア:

[(1, 291223480), (2, 145611740), (4, 72805870), (5, 58244696), (8, 36402935), (10, 29122348), (20, 14561174), (40, 7280587), (131, 2223080), (149, 1954520), (262, 1111540), (298, 977260), (373, 780760), (524, 555770), (596, 488630), (655, 444616), (745, 390904), (746, 390380), (1048, 277885), (1192, 244315), (1310, 222308), (1490, 195452), (1492, 195190), (1865, 156152), (2620, 111154), (2980, 97726), (2984, 97595), (3730, 78076), (5240, 55577), (5960, 48863), (7460, 39038), (14920, 19519)]