20713910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1487}}^1$

素因数の和:1700

約数の個数: 32

約数和(自身を含む): 42854400

約数和(自身を除く): 22140490

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 199, 398, 995, 1393, 1487, 1990, 2786, 2974, 6965, 7435, 10409, 13930, 14870, 20818, 52045, 104090, 295913, 591826, 1479565, 2071391, 2959130, 4142782, 10356955, 20713910]

約数ペア:

[(1, 20713910), (2, 10356955), (5, 4142782), (7, 2959130), (10, 2071391), (14, 1479565), (35, 591826), (70, 295913), (199, 104090), (398, 52045), (995, 20818), (1393, 14870), (1487, 13930), (1990, 10409), (2786, 7435), (2974, 6965)]