164720440

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{4241}}^1$

素因数の和:5223

約数の個数: 32

約数和(自身を含む): 371090160

約数和(自身を除く): 206369720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3884, 4241, 4855, 7768, 8482, 9710, 16964, 19420, 21205, 33928, 38840, 42410, 84820, 169640, 4118011, 8236022, 16472044, 20590055, 32944088, 41180110, 82360220, 164720440]

約数ペア:

[(1, 164720440), (2, 82360220), (4, 41180110), (5, 32944088), (8, 20590055), (10, 16472044), (20, 8236022), (40, 4118011), (971, 169640), (1942, 84820), (3884, 42410), (4241, 38840), (4855, 33928), (7768, 21205), (8482, 19420), (9710, 16964)]