21279784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{6803}}^1$

素因数の和:6849

約数の個数: 32

約数和(自身を含む): 44089920

約数和(自身を除く): 22810136

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 391, 782, 1564, 3128, 6803, 13606, 27212, 54424, 115651, 156469, 231302, 312938, 462604, 625876, 925208, 1251752, 2659973, 5319946, 10639892, 21279784]

約数ペア:

[(1, 21279784), (2, 10639892), (4, 5319946), (8, 2659973), (17, 1251752), (23, 925208), (34, 625876), (46, 462604), (68, 312938), (92, 231302), (136, 156469), (184, 115651), (391, 54424), (782, 27212), (1564, 13606), (3128, 6803)]