20520408

素因数分解:

$2^3\times 3^1\times {\mathrm{79}}^2\times {\mathrm{137}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 52337880

約数和(自身を除く): 31817472

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 79, 137, 158, 237, 274, 316, 411, 474, 548, 632, 822, 948, 1096, 1644, 1896, 3288, 6241, 10823, 12482, 18723, 21646, 24964, 32469, 37446, 43292, 49928, 64938, 74892, 86584, 129876, 149784, 259752, 855017, 1710034, 2565051, 3420068, 5130102, 6840136, 10260204, 20520408]

約数ペア:

[(1, 20520408), (2, 10260204), (3, 6840136), (4, 5130102), (6, 3420068), (8, 2565051), (12, 1710034), (24, 855017), (79, 259752), (137, 149784), (158, 129876), (237, 86584), (274, 74892), (316, 64938), (411, 49928), (474, 43292), (548, 37446), (632, 32469), (822, 24964), (948, 21646), (1096, 18723), (1644, 12482), (1896, 10823), (3288, 6241)]