20689684

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 36989568

約数和(自身を除く): 16299884

約数列:

[1, 2, 4, 71, 142, 263, 277, 284, 526, 554, 1052, 1108, 18673, 19667, 37346, 39334, 72851, 74692, 78668, 145702, 291404, 5172421, 10344842, 20689684]

約数ペア:

[(1, 20689684), (2, 10344842), (4, 5172421), (71, 291404), (142, 145702), (263, 78668), (277, 74692), (284, 72851), (526, 39334), (554, 37346), (1052, 19667), (1108, 18673)]