21265131

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1\times {\mathrm{421}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 28864800

約数和(自身を除く): 7599669

約数列:

[1, 3, 113, 149, 339, 421, 447, 1263, 16837, 47573, 50511, 62729, 142719, 188187, 7088377, 21265131]

約数ペア:

[(1, 21265131), (3, 7088377), (113, 188187), (149, 142719), (339, 62729), (421, 50511), (447, 47573), (1263, 16837)]