21218514

素因数分解:

$2^1\times 3^1\times {\mathrm{401}}^1\times {\mathrm{8819}}^1$

素因数の和:9225

約数の個数: 16

約数和(自身を含む): 42547680

約数和(自身を除く): 21329166

約数列:

[1, 2, 3, 6, 401, 802, 1203, 2406, 8819, 17638, 26457, 52914, 3536419, 7072838, 10609257, 21218514]

約数ペア:

[(1, 21218514), (2, 10609257), (3, 7072838), (6, 3536419), (401, 52914), (802, 26457), (1203, 17638), (2406, 8819)]