20871543

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90353}}^1$

素因数の和:90374

約数の個数: 16

約数和(自身を含む): 34695936

約数和(自身を除く): 13824393

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90353, 271059, 632471, 993883, 1897413, 2981649, 6957181, 20871543]

約数ペア:

[(1, 20871543), (3, 6957181), (7, 2981649), (11, 1897413), (21, 993883), (33, 632471), (77, 271059), (231, 90353)]