18800595

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2040

約数の個数: 48

約数和(自身を含む): 37440000

約数和(自身を除く): 18639405

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 1999, 3135, 5997, 9405, 9995, 17991, 21989, 29985, 37981, 65967, 89955, 109945, 113943, 189905, 197901, 329835, 341829, 417791, 569715, 989505, 1253373, 1709145, 2088955, 3760119, 6266865, 18800595]

約数ペア:

[(1, 18800595), (3, 6266865), (5, 3760119), (9, 2088955), (11, 1709145), (15, 1253373), (19, 989505), (33, 569715), (45, 417791), (55, 341829), (57, 329835), (95, 197901), (99, 189905), (165, 113943), (171, 109945), (209, 89955), (285, 65967), (495, 37981), (627, 29985), (855, 21989), (1045, 17991), (1881, 9995), (1999, 9405), (3135, 5997)]