21374487

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{523}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 32697600

約数和(自身を除く): 11323113

約数列:

[1, 3, 9, 19, 57, 171, 239, 523, 717, 1569, 2151, 4541, 4707, 9937, 13623, 29811, 40869, 89433, 124997, 374991, 1124973, 2374943, 7124829, 21374487]

約数ペア:

[(1, 21374487), (3, 7124829), (9, 2374943), (19, 1124973), (57, 374991), (171, 124997), (239, 89433), (523, 40869), (717, 29811), (1569, 13623), (2151, 9937), (4541, 4707)]