21789755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{1237}}^1$

素因数の和:1526

約数の個数: 16

約数和(自身を含む): 28285824

約数和(自身を除く): 6496069

約数列:

[1, 5, 13, 65, 271, 1237, 1355, 3523, 6185, 16081, 17615, 80405, 335227, 1676135, 4357951, 21789755]

約数ペア:

[(1, 21789755), (5, 4357951), (13, 1676135), (65, 335227), (271, 80405), (1237, 17615), (1355, 16081), (3523, 6185)]