21010913

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{773}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 26303616

約数和(自身を除く): 5292703

約数列:

[1, 7, 11, 77, 353, 773, 2471, 3883, 5411, 8503, 27181, 59521, 272869, 1910083, 3001559, 21010913]

約数ペア:

[(1, 21010913), (7, 3001559), (11, 1910083), (77, 272869), (353, 59521), (773, 27181), (2471, 8503), (3883, 5411)]