161960800

素因数分解:

$2^5\times 5^2\times {\mathrm{443}}^1\times {\mathrm{457}}^1$

素因数の和:920

約数の個数: 72

約数和(自身を含む): 397146456

約数和(自身を除く): 235185656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 443, 457, 800, 886, 914, 1772, 1828, 2215, 2285, 3544, 3656, 4430, 4570, 7088, 7312, 8860, 9140, 11075, 11425, 14176, 14624, 17720, 18280, 22150, 22850, 35440, 36560, 44300, 45700, 70880, 73120, 88600, 91400, 177200, 182800, 202451, 354400, 365600, 404902, 809804, 1012255, 1619608, 2024510, 3239216, 4049020, 5061275, 6478432, 8098040, 10122550, 16196080, 20245100, 32392160, 40490200, 80980400, 161960800]

約数ペア:

[(1, 161960800), (2, 80980400), (4, 40490200), (5, 32392160), (8, 20245100), (10, 16196080), (16, 10122550), (20, 8098040), (25, 6478432), (32, 5061275), (40, 4049020), (50, 3239216), (80, 2024510), (100, 1619608), (160, 1012255), (200, 809804), (400, 404902), (443, 365600), (457, 354400), (800, 202451), (886, 182800), (914, 177200), (1772, 91400), (1828, 88600), (2215, 73120), (2285, 70880), (3544, 45700), (3656, 44300), (4430, 36560), (4570, 35440), (7088, 22850), (7312, 22150), (8860, 18280), (9140, 17720), (11075, 14624), (11425, 14176)]