20985354

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89681}}^1$

素因数の和:89702

約数の個数: 24

約数和(自身を含む): 48966372

約数和(自身を除く): 27981018

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 89681, 179362, 269043, 538086, 807129, 1165853, 1614258, 2331706, 3497559, 6995118, 10492677, 20985354]

約数ペア:

[(1, 20985354), (2, 10492677), (3, 6995118), (6, 3497559), (9, 2331706), (13, 1614258), (18, 1165853), (26, 807129), (39, 538086), (78, 269043), (117, 179362), (234, 89681)]