21540259

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1181}}^1$

素因数の和:1278

約数の個数: 16

約数和(自身を含む): 24623424

約数和(自身を除く): 3083165

約数列:

[1, 13, 23, 61, 299, 793, 1181, 1403, 15353, 18239, 27163, 72041, 353119, 936533, 1656943, 21540259]

約数ペア:

[(1, 21540259), (13, 1656943), (23, 936533), (61, 353119), (299, 72041), (793, 27163), (1181, 18239), (1403, 15353)]