19949936

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 40068864

約数和(自身を除く): 20118928

約数列:

[1, 2, 4, 8, 16, 43, 86, 107, 172, 214, 271, 344, 428, 542, 688, 856, 1084, 1712, 2168, 4336, 4601, 9202, 11653, 18404, 23306, 28997, 36808, 46612, 57994, 73616, 93224, 115988, 186448, 231976, 463952, 1246871, 2493742, 4987484, 9974968, 19949936]

約数ペア:

[(1, 19949936), (2, 9974968), (4, 4987484), (8, 2493742), (16, 1246871), (43, 463952), (86, 231976), (107, 186448), (172, 115988), (214, 93224), (271, 73616), (344, 57994), (428, 46612), (542, 36808), (688, 28997), (856, 23306), (1084, 18404), (1712, 11653), (2168, 9202), (4336, 4601)]