639818640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{888637}}^1$

素因数の和:888656

約数の個数: 60

約数和(自身を含む): 2148726684

約数和(自身を除く): 1508908044

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 888637, 1777274, 2665911, 3554548, 4443185, 5331822, 7109096, 7997733, 8886370, 10663644, 13329555, 14218192, 15995466, 17772740, 21327288, 26659110, 31990932, 35545480, 39988665, 42654576, 53318220, 63981864, 71090960, 79977330, 106636440, 127963728, 159954660, 213272880, 319909320, 639818640]

約数ペア:

[(1, 639818640), (2, 319909320), (3, 213272880), (4, 159954660), (5, 127963728), (6, 106636440), (8, 79977330), (9, 71090960), (10, 63981864), (12, 53318220), (15, 42654576), (16, 39988665), (18, 35545480), (20, 31990932), (24, 26659110), (30, 21327288), (36, 17772740), (40, 15995466), (45, 14218192), (48, 13329555), (60, 10663644), (72, 8886370), (80, 7997733), (90, 7109096), (120, 5331822), (144, 4443185), (180, 3554548), (240, 2665911), (360, 1777274), (720, 888637)]