20718516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{18973}}^1$

素因数の和:19000

約数の個数: 48

約数和(自身を含む): 59502464

約数和(自身を除く): 38783948

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 182, 273, 364, 546, 1092, 18973, 37946, 56919, 75892, 113838, 132811, 227676, 246649, 265622, 398433, 493298, 531244, 739947, 796866, 986596, 1479894, 1593732, 1726543, 2959788, 3453086, 5179629, 6906172, 10359258, 20718516]

約数ペア:

[(1, 20718516), (2, 10359258), (3, 6906172), (4, 5179629), (6, 3453086), (7, 2959788), (12, 1726543), (13, 1593732), (14, 1479894), (21, 986596), (26, 796866), (28, 739947), (39, 531244), (42, 493298), (52, 398433), (78, 265622), (84, 246649), (91, 227676), (156, 132811), (182, 113838), (273, 75892), (364, 56919), (546, 37946), (1092, 18973)]