21587951

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2017}}^1$

素因数の和:2174

約数の個数: 16

約数和(自身を含む): 27121920

約数和(自身を除く): 5533969

約数列:

[1, 7, 11, 77, 139, 973, 1529, 2017, 10703, 14119, 22187, 155309, 280363, 1962541, 3083993, 21587951]

約数ペア:

[(1, 21587951), (7, 3083993), (11, 1962541), (77, 280363), (139, 155309), (973, 22187), (1529, 14119), (2017, 10703)]