204719800

素因数分解:

$2^3\times 5^2\times {\mathrm{509}}^1\times {\mathrm{2011}}^1$

素因数の和:2536

約数の個数: 48

約数和(自身を含む): 477145800

約数和(自身を除く): 272426000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 509, 1018, 2011, 2036, 2545, 4022, 4072, 5090, 8044, 10055, 10180, 12725, 16088, 20110, 20360, 25450, 40220, 50275, 50900, 80440, 100550, 101800, 201100, 402200, 1023599, 2047198, 4094396, 5117995, 8188792, 10235990, 20471980, 25589975, 40943960, 51179950, 102359900, 204719800]

約数ペア:

[(1, 204719800), (2, 102359900), (4, 51179950), (5, 40943960), (8, 25589975), (10, 20471980), (20, 10235990), (25, 8188792), (40, 5117995), (50, 4094396), (100, 2047198), (200, 1023599), (509, 402200), (1018, 201100), (2011, 101800), (2036, 100550), (2545, 80440), (4022, 50900), (4072, 50275), (5090, 40220), (8044, 25450), (10055, 20360), (10180, 20110), (12725, 16088)]