21197001

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5639}}^1$

素因数の和:5828

約数の個数: 16

約数和(自身を含む): 32486400

約数和(自身を除く): 11289399

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5639, 16917, 39473, 118419, 1009381, 3028143, 7065667, 21197001]

約数ペア:

[(1, 21197001), (3, 7065667), (7, 3028143), (21, 1009381), (179, 118419), (537, 39473), (1253, 16917), (3759, 5639)]