21801004

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18859}}^1$

素因数の和:18897

約数の個数: 18

約数和(自身を含む): 40530140

約数和(自身を除く): 18729136

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18859, 37718, 75436, 320603, 641206, 1282412, 5450251, 10900502, 21801004]

約数ペア:

[(1, 21801004), (2, 10900502), (4, 5450251), (17, 1282412), (34, 641206), (68, 320603), (289, 75436), (578, 37718), (1156, 18859)]