21919384319

素因数分解:

$7^1\times {\mathrm{79}}^2\times {\mathrm{179}}^1\times {\mathrm{2803}}^1$

素因数の和:3147

約数の個数: 24

約数和(自身を含む): 25522680960

約数和(自身を除く): 3603296641

約数列:

[1, 7, 79, 179, 553, 1253, 2803, 6241, 14141, 19621, 43687, 98987, 221437, 501737, 1117139, 1550059, 3512159, 7819973, 17493523, 39637223, 122454661, 277460561, 3131340617, 21919384319]

約数ペア:

[(1, 21919384319), (7, 3131340617), (79, 277460561), (179, 122454661), (553, 39637223), (1253, 17493523), (2803, 7819973), (6241, 3512159), (14141, 1550059), (19621, 1117139), (43687, 501737), (98987, 221437)]