21505913

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2549}}^1$

素因数の和:2632

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 4198087

約数列:

[1, 11, 13, 59, 143, 649, 767, 2549, 8437, 28039, 33137, 150391, 364507, 1654301, 1955083, 21505913]

約数ペア:

[(1, 21505913), (11, 1955083), (13, 1654301), (59, 364507), (143, 150391), (649, 33137), (767, 28039), (2549, 8437)]