20404912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{607}}^1$

素因数の和:817

約数の個数: 40

約数和(自身を含む): 43425792

約数和(自身を除く): 23020880

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 191, 382, 607, 764, 1214, 1528, 2101, 2428, 3056, 4202, 4856, 6677, 8404, 9712, 13354, 16808, 26708, 33616, 53416, 106832, 115937, 231874, 463748, 927496, 1275307, 1854992, 2550614, 5101228, 10202456, 20404912]

約数ペア:

[(1, 20404912), (2, 10202456), (4, 5101228), (8, 2550614), (11, 1854992), (16, 1275307), (22, 927496), (44, 463748), (88, 231874), (176, 115937), (191, 106832), (382, 53416), (607, 33616), (764, 26708), (1214, 16808), (1528, 13354), (2101, 9712), (2428, 8404), (3056, 6677), (4202, 4856)]