20181964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{10667}}^1$

素因数の和:10725

約数の個数: 24

約数和(自身を含む): 39428928

約数和(自身を除く): 19246964

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 10667, 21334, 42668, 117337, 234674, 458681, 469348, 917362, 1834724, 5045491, 10090982, 20181964]

約数ペア:

[(1, 20181964), (2, 10090982), (4, 5045491), (11, 1834724), (22, 917362), (43, 469348), (44, 458681), (86, 234674), (172, 117337), (473, 42668), (946, 21334), (1892, 10667)]