21086013

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13187}}^1$

素因数の和:13244

約数の個数: 16

約数和(自身を含む): 31018176

約数和(自身を除く): 9932163

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13187, 39561, 171431, 514293, 540667, 1622001, 7028671, 21086013]

約数ペア:

[(1, 21086013), (3, 7028671), (13, 1622001), (39, 540667), (41, 514293), (123, 171431), (533, 39561), (1599, 13187)]