2981020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 7257600

約数和(自身を除く): 4276580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 199, 214, 398, 428, 535, 749, 796, 995, 1070, 1393, 1498, 1990, 2140, 2786, 2996, 3745, 3980, 5572, 6965, 7490, 13930, 14980, 21293, 27860, 42586, 85172, 106465, 149051, 212930, 298102, 425860, 596204, 745255, 1490510, 2981020]

約数ペア:

[(1, 2981020), (2, 1490510), (4, 745255), (5, 596204), (7, 425860), (10, 298102), (14, 212930), (20, 149051), (28, 106465), (35, 85172), (70, 42586), (107, 27860), (140, 21293), (199, 14980), (214, 13930), (398, 7490), (428, 6965), (535, 5572), (749, 3980), (796, 3745), (995, 2996), (1070, 2786), (1393, 2140), (1498, 1990)]