64991913

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{8573}}^1$

素因数の和:8621

約数の個数: 24

約数和(自身を含む): 104534208

約数和(自身を除く): 39542295

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 8573, 25719, 60011, 162887, 180033, 488661, 1140209, 3094853, 3420627, 9284559, 21663971, 64991913]

約数ペア:

[(1, 64991913), (3, 21663971), (7, 9284559), (19, 3420627), (21, 3094853), (57, 1140209), (133, 488661), (361, 180033), (399, 162887), (1083, 60011), (2527, 25719), (7581, 8573)]