639809042

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{71551}}^1$

素因数の和:71833

約数の個数: 16

約数和(自身を含む): 1020045312

約数和(自身を除く): 380236270

約数列:

[1, 2, 17, 34, 263, 526, 4471, 8942, 71551, 143102, 1216367, 2432734, 18817913, 37635826, 319904521, 639809042]

約数ペア:

[(1, 639809042), (2, 319904521), (17, 37635826), (34, 18817913), (263, 2432734), (526, 1216367), (4471, 143102), (8942, 71551)]