21693991

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4513}}^1$

素因数の和:4566

約数の個数: 16

約数和(自身を含む): 26000640

約数和(自身を除く): 4306649

約数列:

[1, 11, 19, 23, 209, 253, 437, 4513, 4807, 49643, 85747, 103799, 943217, 1141789, 1972181, 21693991]

約数ペア:

[(1, 21693991), (11, 1972181), (19, 1141789), (23, 943217), (209, 103799), (253, 85747), (437, 49643), (4513, 4807)]