87960400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19991}}^1$

素因数の和:20020

約数の個数: 60

約数和(自身を含む): 230547744

約数和(自身を除く): 142587344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 19991, 39982, 79964, 99955, 159928, 199910, 219901, 319856, 399820, 439802, 499775, 799640, 879604, 999550, 1099505, 1599280, 1759208, 1999100, 2199010, 3518416, 3998200, 4398020, 5497525, 7996400, 8796040, 10995050, 17592080, 21990100, 43980200, 87960400]

約数ペア:

[(1, 87960400), (2, 43980200), (4, 21990100), (5, 17592080), (8, 10995050), (10, 8796040), (11, 7996400), (16, 5497525), (20, 4398020), (22, 3998200), (25, 3518416), (40, 2199010), (44, 1999100), (50, 1759208), (55, 1599280), (80, 1099505), (88, 999550), (100, 879604), (110, 799640), (176, 499775), (200, 439802), (220, 399820), (275, 319856), (400, 219901), (440, 199910), (550, 159928), (880, 99955), (1100, 79964), (2200, 39982), (4400, 19991)]