21167349

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53051}}^1$

素因数の和:53080

約数の個数: 16

約数和(自身を含む): 33953280

約数和(自身を除く): 12785931

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53051, 159153, 371357, 1007969, 1114071, 3023907, 7055783, 21167349]

約数ペア:

[(1, 21167349), (3, 7055783), (7, 3023907), (19, 1114071), (21, 1007969), (57, 371357), (133, 159153), (399, 53051)]