19802618

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 33625152

約数和(自身を除く): 13822534

約数列:

[1, 2, 11, 22, 43, 86, 121, 173, 242, 346, 473, 946, 1331, 1903, 2662, 3806, 5203, 7439, 10406, 14878, 20933, 41866, 57233, 81829, 114466, 163658, 230263, 460526, 900119, 1800238, 9901309, 19802618]

約数ペア:

[(1, 19802618), (2, 9901309), (11, 1800238), (22, 900119), (43, 460526), (86, 230263), (121, 163658), (173, 114466), (242, 81829), (346, 57233), (473, 41866), (946, 20933), (1331, 14878), (1903, 10406), (2662, 7439), (3806, 5203)]