20437984

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3967}}^1$

素因数の和:4007

約数の個数: 48

約数和(自身を含む): 47996928

約数和(自身を除く): 27558944

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 184, 224, 322, 368, 644, 736, 1288, 2576, 3967, 5152, 7934, 15868, 27769, 31736, 55538, 63472, 91241, 111076, 126944, 182482, 222152, 364964, 444304, 638687, 729928, 888608, 1277374, 1459856, 2554748, 2919712, 5109496, 10218992, 20437984]

約数ペア:

[(1, 20437984), (2, 10218992), (4, 5109496), (7, 2919712), (8, 2554748), (14, 1459856), (16, 1277374), (23, 888608), (28, 729928), (32, 638687), (46, 444304), (56, 364964), (92, 222152), (112, 182482), (161, 126944), (184, 111076), (224, 91241), (322, 63472), (368, 55538), (644, 31736), (736, 27769), (1288, 15868), (2576, 7934), (3967, 5152)]