16919975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 22320000

約数和(自身を除く): 5400025

約数列:

[1, 5, 19, 25, 95, 179, 199, 475, 895, 995, 3401, 3781, 4475, 4975, 17005, 18905, 35621, 85025, 94525, 178105, 676799, 890525, 3383995, 16919975]

約数ペア:

[(1, 16919975), (5, 3383995), (19, 890525), (25, 676799), (95, 178105), (179, 94525), (199, 85025), (475, 35621), (895, 18905), (995, 17005), (3401, 4975), (3781, 4475)]