20985208

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154303}}^1$

素因数の和:154326

約数の個数: 16

約数和(自身を含む): 41662080

約数和(自身を除く): 20676872

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154303, 308606, 617212, 1234424, 2623151, 5246302, 10492604, 20985208]

約数ペア:

[(1, 20985208), (2, 10492604), (4, 5246302), (8, 2623151), (17, 1234424), (34, 617212), (68, 308606), (136, 154303)]