130561280

素因数分解:

$2^8\times 5^1\times {\mathrm{102001}}^1$

素因数の和:102022

約数の個数: 36

約数和(自身を含む): 312738132

約数和(自身を除く): 182176852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 102001, 204002, 408004, 510005, 816008, 1020010, 1632016, 2040020, 3264032, 4080040, 6528064, 8160080, 13056128, 16320160, 26112256, 32640320, 65280640, 130561280]

約数ペア:

[(1, 130561280), (2, 65280640), (4, 32640320), (5, 26112256), (8, 16320160), (10, 13056128), (16, 8160080), (20, 6528064), (32, 4080040), (40, 3264032), (64, 2040020), (80, 1632016), (128, 1020010), (160, 816008), (256, 510005), (320, 408004), (640, 204002), (1280, 102001)]