21508041

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1217}}^1$

素因数の和:1400

約数の個数: 16

約数和(自身を含む): 29582784

約数和(自身を除く): 8074743

約数列:

[1, 3, 43, 129, 137, 411, 1217, 3651, 5891, 17673, 52331, 156993, 166729, 500187, 7169347, 21508041]

約数ペア:

[(1, 21508041), (3, 7169347), (43, 500187), (129, 166729), (137, 156993), (411, 52331), (1217, 17673), (3651, 5891)]