20784104

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{919}}^1$

素因数の和:1193

約数の個数: 32

約数和(自身を含む): 42724800

約数和(自身を除く): 21940696

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 257, 514, 919, 1028, 1838, 2056, 2827, 3676, 5654, 7352, 10109, 11308, 20218, 22616, 40436, 80872, 236183, 472366, 944732, 1889464, 2598013, 5196026, 10392052, 20784104]

約数ペア:

[(1, 20784104), (2, 10392052), (4, 5196026), (8, 2598013), (11, 1889464), (22, 944732), (44, 472366), (88, 236183), (257, 80872), (514, 40436), (919, 22616), (1028, 20218), (1838, 11308), (2056, 10109), (2827, 7352), (3676, 5654)]