20478447

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 35112960

約数和(自身を除く): 14634513

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 191, 209, 297, 361, 513, 573, 627, 1083, 1719, 1881, 2101, 3249, 3629, 3971, 5157, 5643, 6303, 9747, 10887, 11913, 18909, 32661, 35739, 39919, 56727, 68951, 97983, 107217, 119757, 206853, 359271, 620559, 758461, 1077813, 1861677, 2275383, 6826149, 20478447]

約数ペア:

[(1, 20478447), (3, 6826149), (9, 2275383), (11, 1861677), (19, 1077813), (27, 758461), (33, 620559), (57, 359271), (99, 206853), (171, 119757), (191, 107217), (209, 97983), (297, 68951), (361, 56727), (513, 39919), (573, 35739), (627, 32661), (1083, 18909), (1719, 11913), (1881, 10887), (2101, 9747), (3249, 6303), (3629, 5643), (3971, 5157)]