81391928

素因数分解:

$2^3\times {\mathrm{239}}^1\times {\mathrm{42569}}^1$

素因数の和:42814

約数の個数: 16

約数和(自身を含む): 153252000

約数和(自身を除く): 71860072

約数列:

[1, 2, 4, 8, 239, 478, 956, 1912, 42569, 85138, 170276, 340552, 10173991, 20347982, 40695964, 81391928]

約数ペア:

[(1, 81391928), (2, 40695964), (4, 20347982), (8, 10173991), (239, 340552), (478, 170276), (956, 85138), (1912, 42569)]