21370185

素因数分解:

$3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1987}}^1$

素因数の和:2237

約数の個数: 24

約数和(自身を含む): 37215360

約数和(自身を除く): 15845175

約数列:

[1, 3, 5, 9, 15, 45, 239, 717, 1195, 1987, 2151, 3585, 5961, 9935, 10755, 17883, 29805, 89415, 474893, 1424679, 2374465, 4274037, 7123395, 21370185]

約数ペア:

[(1, 21370185), (3, 7123395), (5, 4274037), (9, 2374465), (15, 1424679), (45, 474893), (239, 89415), (717, 29805), (1195, 17883), (1987, 10755), (2151, 9935), (3585, 5961)]