87920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{157}}^1$

素因数の和:177

約数の個数: 40

約数和(自身を含む): 235104

約数和(自身を除く): 147184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 157, 280, 314, 560, 628, 785, 1099, 1256, 1570, 2198, 2512, 3140, 4396, 5495, 6280, 8792, 10990, 12560, 17584, 21980, 43960, 87920]

約数ペア:

[(1, 87920), (2, 43960), (4, 21980), (5, 17584), (7, 12560), (8, 10990), (10, 8792), (14, 6280), (16, 5495), (20, 4396), (28, 3140), (35, 2512), (40, 2198), (56, 1570), (70, 1256), (80, 1099), (112, 785), (140, 628), (157, 560), (280, 314)]