65286640

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7487}}^1$

素因数の和:7609

約数の個数: 40

約数和(自身を含む): 153204480

約数和(自身を除く): 87917840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 7487, 8720, 14974, 29948, 37435, 59896, 74870, 119792, 149740, 299480, 598960, 816083, 1632166, 3264332, 4080415, 6528664, 8160830, 13057328, 16321660, 32643320, 65286640]

約数ペア:

[(1, 65286640), (2, 32643320), (4, 16321660), (5, 13057328), (8, 8160830), (10, 6528664), (16, 4080415), (20, 3264332), (40, 1632166), (80, 816083), (109, 598960), (218, 299480), (436, 149740), (545, 119792), (872, 74870), (1090, 59896), (1744, 37435), (2180, 29948), (4360, 14974), (7487, 8720)]