21387613

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:844

約数の個数: 16

約数和(自身を含む): 24134656

約数和(自身を除く): 2747043

約数列:

[1, 13, 31, 73, 403, 727, 949, 2263, 9451, 22537, 29419, 53071, 292981, 689923, 1645201, 21387613]

約数ペア:

[(1, 21387613), (13, 1645201), (31, 689923), (73, 292981), (403, 53071), (727, 29419), (949, 22537), (2263, 9451)]