19875009

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{887}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 33417216

約数和(自身を除く): 13542207

約数列:

[1, 3, 7, 11, 21, 33, 77, 97, 231, 291, 679, 887, 1067, 2037, 2661, 3201, 6209, 7469, 9757, 18627, 22407, 29271, 68299, 86039, 204897, 258117, 602273, 946429, 1806819, 2839287, 6625003, 19875009]

約数ペア:

[(1, 19875009), (3, 6625003), (7, 2839287), (11, 1806819), (21, 946429), (33, 602273), (77, 258117), (97, 204897), (231, 86039), (291, 68299), (679, 29271), (887, 22407), (1067, 18627), (2037, 9757), (2661, 7469), (3201, 6209)]