21111937

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{563}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 26422272

約数和(自身を除く): 5310335

約数列:

[1, 7, 11, 77, 487, 563, 3409, 3941, 5357, 6193, 37499, 43351, 274181, 1919267, 3015991, 21111937]

約数ペア:

[(1, 21111937), (7, 3015991), (11, 1919267), (77, 274181), (487, 43351), (563, 37499), (3409, 6193), (3941, 5357)]