21881938

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{8171}}^1$

素因数の和:8289

約数の個数: 16

約数和(自身を含む): 35695296

約数和(自身を除く): 13813358

約数列:

[1, 2, 13, 26, 103, 206, 1339, 2678, 8171, 16342, 106223, 212446, 841613, 1683226, 10940969, 21881938]

約数ペア:

[(1, 21881938), (2, 10940969), (13, 1683226), (26, 841613), (103, 212446), (206, 106223), (1339, 16342), (2678, 8171)]