66640609

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1\times {\mathrm{653}}^1$

素因数の和:960

約数の個数: 16

約数和(自身を含む): 77852160

約数和(自身を除く): 11211551

約数列:

[1, 7, 61, 239, 427, 653, 1673, 4571, 14579, 39833, 102053, 156067, 278831, 1092469, 9520087, 66640609]

約数ペア:

[(1, 66640609), (7, 9520087), (61, 1092469), (239, 278831), (427, 156067), (653, 102053), (1673, 39833), (4571, 14579)]