20761444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{491}}^1$

素因数の和:568

約数の個数: 36

約数和(自身を含む): 41038704

約数和(自身を除く): 20277260

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 491, 682, 961, 982, 1364, 1922, 1964, 3844, 5401, 10571, 10802, 15221, 21142, 21604, 30442, 42284, 60884, 167431, 334862, 471851, 669724, 943702, 1887404, 5190361, 10380722, 20761444]

約数ペア:

[(1, 20761444), (2, 10380722), (4, 5190361), (11, 1887404), (22, 943702), (31, 669724), (44, 471851), (62, 334862), (124, 167431), (341, 60884), (491, 42284), (682, 30442), (961, 21604), (982, 21142), (1364, 15221), (1922, 10802), (1964, 10571), (3844, 5401)]