21158764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{480881}}^1$

素因数の和:480896

約数の個数: 12

約数和(自身を含む): 40394088

約数和(自身を除く): 19235324

約数列:

[1, 2, 4, 11, 22, 44, 480881, 961762, 1923524, 5289691, 10579382, 21158764]

約数ペア:

[(1, 21158764), (2, 10579382), (4, 5289691), (11, 1923524), (22, 961762), (44, 480881)]