21304264

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3643}}^1$

素因数の和:3709

約数の個数: 32

約数和(自身を含む): 43290720

約数和(自身を除く): 21986456

約数列:

[1, 2, 4, 8, 17, 34, 43, 68, 86, 136, 172, 344, 731, 1462, 2924, 3643, 5848, 7286, 14572, 29144, 61931, 123862, 156649, 247724, 313298, 495448, 626596, 1253192, 2663033, 5326066, 10652132, 21304264]

約数ペア:

[(1, 21304264), (2, 10652132), (4, 5326066), (8, 2663033), (17, 1253192), (34, 626596), (43, 495448), (68, 313298), (86, 247724), (136, 156649), (172, 123862), (344, 61931), (731, 29144), (1462, 14572), (2924, 7286), (3643, 5848)]