8751640

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{661}}^1$

素因数の和:1003

約数の個数: 32

約数和(自身を含む): 19780560

約数和(自身を除く): 11028920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 661, 662, 1322, 1324, 1655, 2644, 2648, 3305, 3310, 5288, 6610, 6620, 13220, 13240, 26440, 218791, 437582, 875164, 1093955, 1750328, 2187910, 4375820, 8751640]

約数ペア:

[(1, 8751640), (2, 4375820), (4, 2187910), (5, 1750328), (8, 1093955), (10, 875164), (20, 437582), (40, 218791), (331, 26440), (661, 13240), (662, 13220), (1322, 6620), (1324, 6610), (1655, 5288), (2644, 3310), (2648, 3305)]