19881664

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{911}}^1$

素因数の和:965

約数の個数: 56

約数和(自身を含む): 44476416

約数和(自身を除く): 24594752

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 64, 88, 124, 176, 248, 341, 352, 496, 682, 704, 911, 992, 1364, 1822, 1984, 2728, 3644, 5456, 7288, 10021, 10912, 14576, 20042, 21824, 28241, 29152, 40084, 56482, 58304, 80168, 112964, 160336, 225928, 310651, 320672, 451856, 621302, 641344, 903712, 1242604, 1807424, 2485208, 4970416, 9940832, 19881664]

約数ペア:

[(1, 19881664), (2, 9940832), (4, 4970416), (8, 2485208), (11, 1807424), (16, 1242604), (22, 903712), (31, 641344), (32, 621302), (44, 451856), (62, 320672), (64, 310651), (88, 225928), (124, 160336), (176, 112964), (248, 80168), (341, 58304), (352, 56482), (496, 40084), (682, 29152), (704, 28241), (911, 21824), (992, 20042), (1364, 14576), (1822, 10912), (1984, 10021), (2728, 7288), (3644, 5456)]