20179881

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:450

約数の個数: 32

約数和(自身を含む): 31808000

約数和(自身を除く): 11628119

約数列:

[1, 3, 9, 19, 27, 57, 139, 171, 283, 417, 513, 849, 1251, 2547, 2641, 3753, 5377, 7641, 7923, 16131, 23769, 39337, 48393, 71307, 118011, 145179, 354033, 747403, 1062099, 2242209, 6726627, 20179881]

約数ペア:

[(1, 20179881), (3, 6726627), (9, 2242209), (19, 1062099), (27, 747403), (57, 354033), (139, 145179), (171, 118011), (283, 71307), (417, 48393), (513, 39337), (849, 23769), (1251, 16131), (2547, 7923), (2641, 7641), (3753, 5377)]