21657097

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{2053}}^1$

素因数の和:2208

約数の個数: 16

約数和(自身を含む): 27211392

約数和(自身を除く): 5554295

約数列:

[1, 7, 11, 77, 137, 959, 1507, 2053, 10549, 14371, 22583, 158081, 281261, 1968827, 3093871, 21657097]

約数ペア:

[(1, 21657097), (7, 3093871), (11, 1968827), (77, 281261), (137, 158081), (959, 22583), (1507, 14371), (2053, 10549)]