20572420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8501}}^1$

素因数の和:8532

約数の個数: 36

約数和(自身を含む): 47492172

約数和(自身を除く): 26919752

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8501, 17002, 34004, 42505, 85010, 93511, 170020, 187022, 374044, 467555, 935110, 1028621, 1870220, 2057242, 4114484, 5143105, 10286210, 20572420]

約数ペア:

[(1, 20572420), (2, 10286210), (4, 5143105), (5, 4114484), (10, 2057242), (11, 1870220), (20, 1028621), (22, 935110), (44, 467555), (55, 374044), (110, 187022), (121, 170020), (220, 93511), (242, 85010), (484, 42505), (605, 34004), (1210, 17002), (2420, 8501)]