21565209

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1583}}^1$

素因数の和:1844

約数の個数: 16

約数和(自身を含む): 30412800

約数和(自身を除く): 8847591

約数列:

[1, 3, 19, 57, 239, 717, 1583, 4541, 4749, 13623, 30077, 90231, 378337, 1135011, 7188403, 21565209]

約数ペア:

[(1, 21565209), (3, 7188403), (19, 1135011), (57, 378337), (239, 90231), (717, 30077), (1583, 13623), (4541, 4749)]