21747368

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87691}}^1$

素因数の和:87728

約数の個数: 16

約数和(自身を含む): 42092160

約数和(自身を除く): 20344792

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87691, 175382, 350764, 701528, 2718421, 5436842, 10873684, 21747368]

約数ペア:

[(1, 21747368), (2, 10873684), (4, 5436842), (8, 2718421), (31, 701528), (62, 350764), (124, 175382), (248, 87691)]