20968844

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31019}}^1$

素因数の和:31049

約数の個数: 18

約数和(自身を含む): 39736620

約数和(自身を除く): 18767776

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31019, 62038, 124076, 403247, 806494, 1612988, 5242211, 10484422, 20968844]

約数ペア:

[(1, 20968844), (2, 10484422), (4, 5242211), (13, 1612988), (26, 806494), (52, 403247), (169, 124076), (338, 62038), (676, 31019)]