81301120

素因数分解:

$2^7\times 5^1\times {\mathrm{127033}}^1$

素因数の和:127052

約数の個数: 32

約数和(自身を含む): 194362020

約数和(自身を除く): 113060900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127033, 254066, 508132, 635165, 1016264, 1270330, 2032528, 2540660, 4065056, 5081320, 8130112, 10162640, 16260224, 20325280, 40650560, 81301120]

約数ペア:

[(1, 81301120), (2, 40650560), (4, 20325280), (5, 16260224), (8, 10162640), (10, 8130112), (16, 5081320), (20, 4065056), (32, 2540660), (40, 2032528), (64, 1270330), (80, 1016264), (128, 635165), (160, 508132), (320, 254066), (640, 127033)]