21392852

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{577}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 43502592

約数和(自身を除く): 22109740

約数列:

[1, 2, 4, 13, 23, 26, 31, 46, 52, 62, 92, 124, 299, 403, 577, 598, 713, 806, 1154, 1196, 1426, 1612, 2308, 2852, 7501, 9269, 13271, 15002, 17887, 18538, 26542, 30004, 35774, 37076, 53084, 71548, 172523, 232531, 345046, 411401, 465062, 690092, 822802, 930124, 1645604, 5348213, 10696426, 21392852]

約数ペア:

[(1, 21392852), (2, 10696426), (4, 5348213), (13, 1645604), (23, 930124), (26, 822802), (31, 690092), (46, 465062), (52, 411401), (62, 345046), (92, 232531), (124, 172523), (299, 71548), (403, 53084), (577, 37076), (598, 35774), (713, 30004), (806, 26542), (1154, 18538), (1196, 17887), (1426, 15002), (1612, 13271), (2308, 9269), (2852, 7501)]