21702087

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 37110528

約数和(自身を除く): 15408441

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 81, 99, 207, 243, 253, 297, 353, 621, 759, 891, 1059, 1863, 2277, 2673, 3177, 3883, 5589, 6831, 8119, 9531, 11649, 20493, 24357, 28593, 34947, 61479, 73071, 85779, 89309, 104841, 219213, 267927, 314523, 657639, 803781, 943569, 1972917, 2411343, 7234029, 21702087]

約数ペア:

[(1, 21702087), (3, 7234029), (9, 2411343), (11, 1972917), (23, 943569), (27, 803781), (33, 657639), (69, 314523), (81, 267927), (99, 219213), (207, 104841), (243, 89309), (253, 85779), (297, 73071), (353, 61479), (621, 34947), (759, 28593), (891, 24357), (1059, 20493), (1863, 11649), (2277, 9531), (2673, 8119), (3177, 6831), (3883, 5589)]