21054052

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1993}}^1$

素因数の和:2155

約数の個数: 24

約数和(自身を含む): 39082400

約数和(自身を除く): 18028348

約数列:

[1, 2, 4, 19, 38, 76, 139, 278, 556, 1993, 2641, 3986, 5282, 7972, 10564, 37867, 75734, 151468, 277027, 554054, 1108108, 5263513, 10527026, 21054052]

約数ペア:

[(1, 21054052), (2, 10527026), (4, 5263513), (19, 1108108), (38, 554054), (76, 277027), (139, 151468), (278, 75734), (556, 37867), (1993, 10564), (2641, 7972), (3986, 5282)]