21680516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1307}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 46146240

約数和(自身を除く): 24465724

約数列:

[1, 2, 4, 11, 13, 22, 26, 29, 44, 52, 58, 116, 143, 286, 319, 377, 572, 638, 754, 1276, 1307, 1508, 2614, 4147, 5228, 8294, 14377, 16588, 16991, 28754, 33982, 37903, 57508, 67964, 75806, 151612, 186901, 373802, 416933, 492739, 747604, 833866, 985478, 1667732, 1970956, 5420129, 10840258, 21680516]

約数ペア:

[(1, 21680516), (2, 10840258), (4, 5420129), (11, 1970956), (13, 1667732), (22, 985478), (26, 833866), (29, 747604), (44, 492739), (52, 416933), (58, 373802), (116, 186901), (143, 151612), (286, 75806), (319, 67964), (377, 57508), (572, 37903), (638, 33982), (754, 28754), (1276, 16991), (1307, 16588), (1508, 14377), (2614, 8294), (4147, 5228)]