20139593840

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1128901}}^1$

素因数の和:1129137

約数の個数: 40

約数和(自身を含む): 47034572928

約数和(自身を除く): 26894979088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 8920, 17840, 1128901, 2257802, 4515604, 5644505, 9031208, 11289010, 18062416, 22578020, 45156040, 90312080, 251744923, 503489846, 1006979692, 1258724615, 2013959384, 2517449230, 4027918768, 5034898460, 10069796920, 20139593840]

約数ペア:

[(1, 20139593840), (2, 10069796920), (4, 5034898460), (5, 4027918768), (8, 2517449230), (10, 2013959384), (16, 1258724615), (20, 1006979692), (40, 503489846), (80, 251744923), (223, 90312080), (446, 45156040), (892, 22578020), (1115, 18062416), (1784, 11289010), (2230, 9031208), (3568, 5644505), (4460, 4515604), (8920, 2257802), (17840, 1128901)]