201817840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1811}}^1$

素因数の和:2030

約数の個数: 80

約数和(自身を含む): 539251200

約数和(自身を除く): 337433360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 199, 280, 398, 560, 796, 995, 1393, 1592, 1811, 1990, 2786, 3184, 3622, 3980, 5572, 6965, 7244, 7960, 9055, 11144, 12677, 13930, 14488, 15920, 18110, 22288, 25354, 27860, 28976, 36220, 50708, 55720, 63385, 72440, 101416, 111440, 126770, 144880, 202832, 253540, 360389, 507080, 720778, 1014160, 1441556, 1801945, 2522723, 2883112, 3603890, 5045446, 5766224, 7207780, 10090892, 12613615, 14415560, 20181784, 25227230, 28831120, 40363568, 50454460, 100908920, 201817840]

約数ペア:

[(1, 201817840), (2, 100908920), (4, 50454460), (5, 40363568), (7, 28831120), (8, 25227230), (10, 20181784), (14, 14415560), (16, 12613615), (20, 10090892), (28, 7207780), (35, 5766224), (40, 5045446), (56, 3603890), (70, 2883112), (80, 2522723), (112, 1801945), (140, 1441556), (199, 1014160), (280, 720778), (398, 507080), (560, 360389), (796, 253540), (995, 202832), (1393, 144880), (1592, 126770), (1811, 111440), (1990, 101416), (2786, 72440), (3184, 63385), (3622, 55720), (3980, 50708), (5572, 36220), (6965, 28976), (7244, 27860), (7960, 25354), (9055, 22288), (11144, 18110), (12677, 15920), (13930, 14488)]