21027565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6883}}^1$

素因数の和:6948

約数の個数: 16

約数和(自身を含む): 27756288

約数和(自身を除く): 6728723

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6883, 34415, 89479, 323501, 447395, 1617505, 4205513, 21027565]

約数ペア:

[(1, 21027565), (5, 4205513), (13, 1617505), (47, 447395), (65, 323501), (235, 89479), (611, 34415), (3055, 6883)]