77915320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{278269}}^1$

素因数の和:278287

約数の個数: 32

約数和(自身を含む): 200354400

約数和(自身を除く): 122439080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 278269, 556538, 1113076, 1391345, 1947883, 2226152, 2782690, 3895766, 5565380, 7791532, 9739415, 11130760, 15583064, 19478830, 38957660, 77915320]

約数ペア:

[(1, 77915320), (2, 38957660), (4, 19478830), (5, 15583064), (7, 11130760), (8, 9739415), (10, 7791532), (14, 5565380), (20, 3895766), (28, 2782690), (35, 2226152), (40, 1947883), (56, 1391345), (70, 1113076), (140, 556538), (280, 278269)]