87740821

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{17729}}^1$

素因数の和:17844

約数の個数: 12

約数和(自身を含む): 103082220

約数和(自身を除く): 15341399

約数列:

[1, 7, 49, 101, 707, 4949, 17729, 124103, 868721, 1790629, 12534403, 87740821]

約数ペア:

[(1, 87740821), (7, 12534403), (49, 1790629), (101, 868721), (707, 124103), (4949, 17729)]