21011691

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{1283}}^1$

素因数の和:1442

約数の個数: 16

約数和(自身を含む): 28843776

約数和(自身を除く): 7832085

約数列:

[1, 3, 53, 103, 159, 309, 1283, 3849, 5459, 16377, 67999, 132149, 203997, 396447, 7003897, 21011691]

約数ペア:

[(1, 21011691), (3, 7003897), (53, 396447), (103, 203997), (159, 132149), (309, 67999), (1283, 16377), (3849, 5459)]