120640640

素因数分解:

$2^7\times 5^1\times {\mathrm{251}}^1\times {\mathrm{751}}^1$

素因数の和:1021

約数の個数: 64

約数和(自身を含む): 289941120

約数和(自身を除く): 169300480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 251, 320, 502, 640, 751, 1004, 1255, 1502, 2008, 2510, 3004, 3755, 4016, 5020, 6008, 7510, 8032, 10040, 12016, 15020, 16064, 20080, 24032, 30040, 32128, 40160, 48064, 60080, 80320, 96128, 120160, 160640, 188501, 240320, 377002, 480640, 754004, 942505, 1508008, 1885010, 3016016, 3770020, 6032032, 7540040, 12064064, 15080080, 24128128, 30160160, 60320320, 120640640]

約数ペア:

[(1, 120640640), (2, 60320320), (4, 30160160), (5, 24128128), (8, 15080080), (10, 12064064), (16, 7540040), (20, 6032032), (32, 3770020), (40, 3016016), (64, 1885010), (80, 1508008), (128, 942505), (160, 754004), (251, 480640), (320, 377002), (502, 240320), (640, 188501), (751, 160640), (1004, 120160), (1255, 96128), (1502, 80320), (2008, 60080), (2510, 48064), (3004, 40160), (3755, 32128), (4016, 30040), (5020, 24032), (6008, 20080), (7510, 16064), (8032, 15020), (10040, 12016)]