19788428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{10459}}^1$

素因数の和:10517

約数の個数: 24

約数和(自身を含む): 38660160

約数和(自身を除く): 18871732

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 10459, 20918, 41836, 115049, 230098, 449737, 460196, 899474, 1798948, 4947107, 9894214, 19788428]

約数ペア:

[(1, 19788428), (2, 9894214), (4, 4947107), (11, 1798948), (22, 899474), (43, 460196), (44, 449737), (86, 230098), (172, 115049), (473, 41836), (946, 20918), (1892, 10459)]