21269131

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{593}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 23950080

約数和(自身を除く): 2680949

約数列:

[1, 13, 31, 89, 403, 593, 1157, 2759, 7709, 18383, 35867, 52777, 238979, 686101, 1636087, 21269131]

約数ペア:

[(1, 21269131), (13, 1636087), (31, 686101), (89, 238979), (403, 52777), (593, 35867), (1157, 18383), (2759, 7709)]