21511171

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{3109}}^1$

素因数の和:3174

約数の個数: 16

約数和(自身を含む): 25526880

約数和(自身を除く): 4015709

約数列:

[1, 11, 17, 37, 187, 407, 629, 3109, 6919, 34199, 52853, 115033, 581383, 1265363, 1955561, 21511171]

約数ペア:

[(1, 21511171), (11, 1955561), (17, 1265363), (37, 581383), (187, 115033), (407, 52853), (629, 34199), (3109, 6919)]