21154851

素因数分解:

$3^7\times {\mathrm{17}}^1\times {\mathrm{569}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 33652800

約数和(自身を除く): 12497949

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 569, 729, 1377, 1707, 2187, 4131, 5121, 9673, 12393, 15363, 29019, 37179, 46089, 87057, 138267, 261171, 414801, 783513, 1244403, 2350539, 7051617, 21154851]

約数ペア:

[(1, 21154851), (3, 7051617), (9, 2350539), (17, 1244403), (27, 783513), (51, 414801), (81, 261171), (153, 138267), (243, 87057), (459, 46089), (569, 37179), (729, 29019), (1377, 15363), (1707, 12393), (2187, 9673), (4131, 5121)]