51259280

素因数分解:

$2^4\times 5^1\times {\mathrm{640741}}^1$

素因数の和:640754

約数の個数: 20

約数和(自身を含む): 119178012

約数和(自身を除く): 67918732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640741, 1281482, 2562964, 3203705, 5125928, 6407410, 10251856, 12814820, 25629640, 51259280]

約数ペア:

[(1, 51259280), (2, 25629640), (4, 12814820), (5, 10251856), (8, 6407410), (10, 5125928), (16, 3203705), (20, 2562964), (40, 1281482), (80, 640741)]