28178798

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{701}}^1$

素因数の和:1003

約数の個数: 16

約数和(自身を含む): 42962400

約数和(自身を除く): 14783602

約数列:

[1, 2, 101, 199, 202, 398, 701, 1402, 20099, 40198, 70801, 139499, 141602, 278998, 14089399, 28178798]

約数ペア:

[(1, 28178798), (2, 14089399), (101, 278998), (199, 141602), (202, 139499), (398, 70801), (701, 40198), (1402, 20099)]