20405165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{1051}}^1$

素因数の和:1420

約数の個数: 16

約数和(自身を含む): 26813376

約数和(自身を除く): 6408211

約数列:

[1, 5, 11, 55, 353, 1051, 1765, 3883, 5255, 11561, 19415, 57805, 371003, 1855015, 4081033, 20405165]

約数ペア:

[(1, 20405165), (5, 4081033), (11, 1855015), (55, 371003), (353, 57805), (1051, 19415), (1765, 11561), (3883, 5255)]