21155553

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{5189}}^1$

素因数の和:5349

約数の個数: 16

約数和(自身を含む): 31555200

約数和(自身を除く): 10399647

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 5189, 15567, 46701, 140103, 783539, 2350617, 7051851, 21155553]

約数ペア:

[(1, 21155553), (3, 7051851), (9, 2350617), (27, 783539), (151, 140103), (453, 46701), (1359, 15567), (4077, 5189)]