21542584

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^2\times {\mathrm{281}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 47612880

約数和(自身を除く): 26070296

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 281, 296, 518, 562, 1036, 1124, 1369, 1967, 2072, 2248, 2738, 3934, 5476, 7868, 9583, 10397, 10952, 15736, 19166, 20794, 38332, 41588, 72779, 76664, 83176, 145558, 291116, 384689, 582232, 769378, 1538756, 2692823, 3077512, 5385646, 10771292, 21542584]

約数ペア:

[(1, 21542584), (2, 10771292), (4, 5385646), (7, 3077512), (8, 2692823), (14, 1538756), (28, 769378), (37, 582232), (56, 384689), (74, 291116), (148, 145558), (259, 83176), (281, 76664), (296, 72779), (518, 41588), (562, 38332), (1036, 20794), (1124, 19166), (1369, 15736), (1967, 10952), (2072, 10397), (2248, 9583), (2738, 7868), (3934, 5476)]