18976975

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:319

約数の個数: 24

約数和(自身を含む): 24442880

約数和(自身を除く): 5465905

約数列:

[1, 5, 25, 43, 127, 139, 215, 635, 695, 1075, 3175, 3475, 5461, 5977, 17653, 27305, 29885, 88265, 136525, 149425, 441325, 759079, 3795395, 18976975]

約数ペア:

[(1, 18976975), (5, 3795395), (25, 759079), (43, 441325), (127, 149425), (139, 136525), (215, 88265), (635, 29885), (695, 27305), (1075, 17653), (3175, 5977), (3475, 5461)]