15425739

素因数分解:

$3^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 27456000

約数和(自身を除く): 12030261

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 263, 343, 399, 441, 789, 931, 1029, 1197, 1841, 2367, 2793, 3087, 4997, 5523, 6517, 8379, 12887, 14991, 16569, 19551, 34979, 38661, 44973, 58653, 90209, 104937, 115983, 244853, 270627, 314811, 734559, 811881, 1713971, 2203677, 5141913, 15425739]

約数ペア:

[(1, 15425739), (3, 5141913), (7, 2203677), (9, 1713971), (19, 811881), (21, 734559), (49, 314811), (57, 270627), (63, 244853), (133, 115983), (147, 104937), (171, 90209), (263, 58653), (343, 44973), (399, 38661), (441, 34979), (789, 19551), (931, 16569), (1029, 14991), (1197, 12887), (1841, 8379), (2367, 6517), (2793, 5523), (3087, 4997)]