21404513

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4211}}^1$

素因数の和:4264

約数の個数: 16

約数和(自身を含む): 25474176

約数和(自身を除く): 4069663

約数列:

[1, 13, 17, 23, 221, 299, 391, 4211, 5083, 54743, 71587, 96853, 930631, 1259089, 1646501, 21404513]

約数ペア:

[(1, 21404513), (13, 1646501), (17, 1259089), (23, 930631), (221, 96853), (299, 71587), (391, 54743), (4211, 5083)]