18117515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1321}}^1$

素因数の和:1550

約数の個数: 16

約数和(自身を含む): 23542176

約数和(自身を除く): 5424661

約数列:

[1, 5, 13, 65, 211, 1055, 1321, 2743, 6605, 13715, 17173, 85865, 278731, 1393655, 3623503, 18117515]

約数ペア:

[(1, 18117515), (5, 3623503), (13, 1393655), (65, 278731), (211, 85865), (1055, 17173), (1321, 13715), (2743, 6605)]