208496720

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{25303}}^1$

素因数の和:25419

約数の個数: 40

約数和(自身を含む): 489480576

約数和(自身を除く): 280983856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 25303, 50606, 101212, 126515, 202424, 253030, 404848, 506060, 1012120, 2024240, 2606209, 5212418, 10424836, 13031045, 20849672, 26062090, 41699344, 52124180, 104248360, 208496720]

約数ペア:

[(1, 208496720), (2, 104248360), (4, 52124180), (5, 41699344), (8, 26062090), (10, 20849672), (16, 13031045), (20, 10424836), (40, 5212418), (80, 2606209), (103, 2024240), (206, 1012120), (412, 506060), (515, 404848), (824, 253030), (1030, 202424), (1648, 126515), (2060, 101212), (4120, 50606), (8240, 25303)]