21491774

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{19}}^2\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 36

約数和(自身を含む): 36493704

約数和(自身を除く): 15001930

約数列:

[1, 2, 17, 19, 34, 38, 103, 206, 289, 323, 361, 578, 646, 722, 1751, 1957, 3502, 3914, 5491, 6137, 10982, 12274, 29767, 33269, 37183, 59534, 66538, 74366, 104329, 208658, 565573, 632111, 1131146, 1264222, 10745887, 21491774]

約数ペア:

[(1, 21491774), (2, 10745887), (17, 1264222), (19, 1131146), (34, 632111), (38, 565573), (103, 208658), (206, 104329), (289, 74366), (323, 66538), (361, 59534), (578, 37183), (646, 33269), (722, 29767), (1751, 12274), (1957, 10982), (3502, 6137), (3914, 5491)]